List of proprietary software for Linux

Though Linux

Linux

Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

is an open-source operating system

Operating system

An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

and usually comes bundled with free and open source software

Free and open source software

Free and open-source software or free/libre/open-source software is software that is liberally licensed to grant users the right to use, study, change, and improve its design through the availability of its source code...

, proprietary software for Linux does exist and is available to end-users.

The following is a list of proprietary software for Linux:

Web Browser/s

Google Chrome
Google Chrome
Google Chrome is a web browser developed by Google that uses the WebKit layout engine. It was first released as a beta version for Microsoft Windows on September 2, 2008, and the public stable release was on December 11, 2008. The name is derived from the graphical user interface frame, or...

— freeware, Google Chrome is a browser that combines a minimal design with sophisticated technology to make the web faster, safer, and easier (an open source version, Chromium
Chromium (web browser)
Chromium is the open source web browser project from which Google Chrome draws its source code. The project's hourly Chromium snapshots appear essentially similar to the latest builds of Google Chrome aside from the omission of certain Google additions, most noticeable among them: Google's...

, also exists)
Opera
Opera (web browser)
Opera is a web browser and Internet suite developed by Opera Software with over 200 million users worldwide. The browser handles common Internet-related tasks such as displaying web sites, sending and receiving e-mail messages, managing contacts, chatting on IRC, downloading files via BitTorrent,...

— freeware, offers free and easy to download Web browsers for computers, mobile phones and devices.
Netscape
Netscape
Netscape Communications is a US computer services company, best known for Netscape Navigator, its web browser. When it was an independent company, its headquarters were in Mountain View, California...

— freeware, last Linux version is 7.2

E-mail Client in MS Outlook Style

Bynari
Bynari
Insight Family of products is a collaboration suite of products that consists of open source components and proprietary development, by Bynari, that runs on Linux....

— Insight Family of products is a collaboration suite of products that consists of open source components and proprietary development, by Bynari, that runs on Linux.
Lotus Notes
Lotus Notes
Lotus Notes is the client of a collaborative platform originally created by Lotus Development Corp. in 1989. In 1995 Lotus was acquired by IBM and became known as the Lotus Development division of IBM and is now part of the IBM Software Group...

— 8.0.0 for Linux/x86 (Red Hat and SuSE initially)
Zarafa Outlook Sharing
Zarafa (software)
Zarafa is the name of an European open source collaborative software, developed in Delft, the Netherlands. The company that develops Zarafa, previously known as Connectux, is also called Zarafa. The Zarafa groupware provides email storage on the server side and brings its own Ajax-based mail client...

Zarafa is designed to integrate with Microsoft Office Outlook and is meant as an alternative to the Microsoft Exchange Server.
Zimbra
Zimbra
Zimbra Collaboration Suite is a groupware product created by Zimbra, Inc., located in Palo Alto, California, USA. The company was purchased by Yahoo! in September 2007, and subsequently purchased by VMware on Tuesday, January 12, 2010. The software consists of both client and server components...

— Open source cross-platform webmail and Desktop client.

FTP Client/s

IglooFTP PRO for Linux
Pro:Atria Ltd SFTPPlus
SFTPPlus
SFTPPlus is a commercial SSH server and client with additional audit and automation functions in order to meet regulatory and corporate compliance requirements. It is developed by Pro:Atria Ltd and runs on both Microsoft Windows and Unix-like operating systems, including Linux and Solaris...

commercial SSH server and client with additional audit and automation functions in order to meet regulatory and corporate compliance requirements.
Xellsoft.com SynchronEX+ Shareware, SynchronEX enables robust multi-directional file tree synchronization and backup over local & network paths in any situation:

Firewall (packet filtering)

SmoothWall
SmoothWall
Smoothwall is a Linux distribution designed to be used as an open source firewall. Designed for ease of use, Smoothwall is configured via a web-based GUI, and requires little or no knowledge of Linux to install or use....

Corporate — A closed fork of SmoothWall, targeted at enterprise and corporate users

P2P File Sharing

MetaMachine eDonkey2000
EDonkey2000
eDonkey2000 was a peer-to-peer file sharing application developed by US company MetaMachine, using the Multisource File Transfer Protocol...

— latest release from 25.07.2005.
Loophole (WinMX
WinMX
WinMX is a freeware peer-to-peer file sharing program authored by Frontcode Technologies that runs on Microsoft Windows operating systems, created in 2001. According to one study, it was the number one source for online music in 2005 with an estimated 2.1 million users...

protocol) — WinMX servers down since 09.2005.

Fax software

Esker Fax
Esker Fax
Esker Fax from Esker is a Windows server based fax server solution that allows fax processing transmission and reception from both desktop clients and host applications.-Product description:...
Esker VSI-FAX
Fax2Send
Fax2Send
Fax2Send is a fax server software system produced by Beacon Computer Services, in the U.K. It is subject to a proprietary licence.The system is available in versions for Linux and Solaris operating systems. It includes APIs to facilitate embedding faxing functionality in server applications.Client...
FAXCOM
MessagePlus/Open
MessagePlus/Open
MessagePlus/Open is a communication platform for medium to large organizations designed specifically to handle high volumes of traffic within a high-availability environment. Currently supported communication channels include fax, fax over IP, e-mail and SMS, together withvarious options for...
U-Fax
U-Fax
U-Fax is a fax server software system for Unix servers, produced by Beacon Computer Services, in the UK. It is subject to a proprietary licence.The software include APIs to facilitate embedding faxing functionality in other server applications....

File splitters

HJSplit for Linux, also available on other platforms.

PDF viewer

Adobe Systems
Adobe Systems
Adobe Systems Incorporated is an American computer software company founded in 1982 and headquartered in San Jose, California, United States...

Acrobat Reader
Foxit Software Foxit Reader
Foxit Reader
Foxit Reader is a multilingual PDF reader. Both the basic and full version readers can be downloaded for free.Foxit Reader is notable for its short load time and small filesize, and has been compared favorably to Adobe Reader...
PDF Studio Pro
PDF Studio Standard

Antivirus

AntiVir Workstation PersonalEdition
AVG Anti-Virus
AVG Anti-Virus
AVG is a family of anti-virus and Internet security software for the Microsoft Windows, Linux, Mac OS X, and FreeBSD computing platforms, developed by AVG Technologies, a privately held Czech company formerly known as Grisoft.- History :...
Dr. Web
Dr. Web
Dr. Web is a Russian anti-virus suite. It was first released in 1992, and become the first anti-virus service in Russia.The software offers anti-virus and anti-spam solutions and is used by Yandex, the Russia's biggest search provider, to scan e-mail attachments.. There is also an add-on for...
F-Prot (not to be confused with F-Secure)
Kaspersky Anti-Virus
Kaspersky Anti-Virus
Kaspersky Anti-Virus is an antivirus program developed by Kaspersky Lab. It is designed to protect users from malware and is primarily designed for computers running Microsoft Windows and Mac OS X, though a version for Linux is available for business consumers....
NOD32
NOD32
ESET NOD32 Antivirus, commonly known as NOD32, is an antivirus software package made by the Slovak company ESET. ESET NOD32 Antivirus is sold in two editions, Home Edition and Business Edition...

(server version)
RAV Antivirus
Trend Micro
Trend Micro
Trend Micro Inc. is a computer security company. It is headquartered in Tokyo, Japan and markets Trend Micro Internet Security, Trend Micro Worry-Free Business Security, OfficeScan, and other related security products and services...

ServerProtect for Linux
Avast Anti-Virus
BitDefender
BitDefender
BitDefender is an antivirus software suite developed by Romania-based software company Softwin. It was launched in November 2001, and is currently in its 15 build version...

Antivirus Scanner for Unices

Backup software

EMC Legato Networker
EMC Legato NetWorker
EMC NetWorker is a suite of enterprise level data protection software that unifies and automates backup to tape, disk-based, and flash-based storage media across physical and virtual environments for granular and disaster recovery. Cross-platform support is provided for Linux, Windows, Macintosh,...
www.Lonetar.com
Microlite BackupEDGE
Nero Linux, popular CD burning software. http://www.nero.com/enu/linux4.html
SpiderOak Backup https://spideroak.com
BRU Workstation/Desktop/Server, reliable backup software. http://www.tolisgroup.com/products/software/

PIM / DB / Hierarchical notebook with tree view

TreePad Lite

Multimedia Player

Real Player
PowerDVD for Linux
PowerDVD
CyberLink PowerDVD is a media player for Microsoft Windows. Several editions of the software are sold including "Ultra", "Deluxe" and "Standard". All editions support the viewing of DVD and the Ultra edition supports Blu-ray playback, including the playback of Blu-ray 3D content.The product is...

(discontinued)
LinDVD
LinDVD
LinDVD from Corel is a commercial proprietary software for Linux for the playback of DVDs and other multimedia files. The latest version now supports ultra-mobile PCs and mobile internet devices , as well as a streaming media and a wider range of standard and high-definition video and audio...
Fluendo DVD Player

Graphics viewers/editors

CompuPic
Picasa
Picasa
Picasa is an image organizer and image viewer for organizing and editing digital photos, plus an integrated photo-sharing website, originally created by Idealab in 2002 and owned by Google since 2004. "Picasa" is a blend of the name of Spanish painter Pablo Picasso, the phrase mi casa for "my...

2.2, 2.7 and 3.0 beta ((discontinued))
XnView MP
Xv
Xv
xv is a shareware program written by John Bradley to display and modify digital images under the X Window System.While popular in the early 1990s , no official releases have been made since December 1994...

Simple/Professional Video Production Environment

iMira Editing
MainActor
MainActor
MainActor was video editing software from MainConcept for Windows and since July 15, 2004 also forLinux. The last version was 5.5, being available for SuSE 10.1 and Ubuntu6 distributions . In the beginning the software was written on the Amiga....
IFX Piranha
Autodesk/Discreet Smoke
Autodesk/Discreet Flint/Flame/Inferno

Creation of 2D and 3D Effects

Shake
Shake (software)
Shake is a discontinued image compositing package used in the post-production industry. Shake was widely used in visual effects and digital compositing for film, HD and commercials. Shake exposes its node graph architecture graphically. It enables complex image processing sequences to be designed...
Fusion
Eyeon Fusion
Fusion is an image compositing software program created by eyeon Software Inc. It is typically used to create visual effects and digital compositing for film, HD and commercials...
Nuke
Nuke (software)
Nuke is a node-based compositor produced by The Foundry, and used for film and television post-production. Nuke is cross-platform, and is available for Microsoft Windows, Mac OS X, and Linux...

Miscellaneous

Google Earth
TrueCrypt
TrueCrypt
TrueCrypt is a software application used for on-the-fly encryption . It is free and open source. It can create a virtual encrypted disk within a file or encrypt a partition or the entire storage device .- Operating systems :TrueCrypt supports Microsoft Windows, Mac OS X, and...

, the source code
Source code
In computer science, source code is text written using the format and syntax of the programming language that it is being written in. Such a language is specially designed to facilitate the work of computer programmers, who specify the actions to be performed by a computer mostly by writing source...

is available, but the license is considered "unclear" and therefore not considered "free" by some of the major GNU/Linux distributions, and even considered with "potential to be actively dangerous" by Fedora
Fedora (operating system)
Fedora is a RPM-based, general purpose collection of software, including an operating system based on the Linux kernel, developed by the community-supported Fedora Project and sponsored by Red Hat...

Office suites

StarOffice
StarOffice
StarOffice, known briefly as Oracle Open Office before its discontinuation in 2010, is a proprietary office suite. It was originally developed by StarDivision which was acquired by Sun Microsystems in 1999...

(discontinued)
HancomOffice
ApplixWare
Applixware
Applixware is a suite of modular applications edited by Vistasource, Inc.Applixware was originally created by Applix, Inc..-Alis:Applix's first office suite, introduced in 1986, was called Alis, and was marketed with Alice in Wonderland themed promotional items...

Office (see Applixware Words
Applixware Words
Applixware Words is a word processor that has been available for different UNIX platforms since 1992; a Linux version was released in 1996. Part of the Applixware cross platform development IDE, Applixware Words is a full featured word processor with macros, forms, and RealTime financial data feed...

)
ThinkFree Office
ThinkFree Office
ThinkFree Office by Haansoft ThinkFree Co. Ltd., a subsidiary company of Haansoft Corporation, is an office suite written in Java that runs on Windows, Linux, Macintosh and Android platforms....
SoftMaker Office
SoftMaker Office
SoftMaker Office is an office suite for Microsoft Windows, Linux, FreeBSD, Windows CE, and the Pocket PC, developed since 1989 by the German company SoftMaker Software GmbH, Nuremberg....
Yozo Office
EIOffice
EIOffice
EIOffice, also known as Evermore Integrated Office, is a proprietary Office suite by Evermore software. In 2010, Evermore changed their name to Yozosoft ....

Word Processor

UltraEdit
UltraEdit
UltraEdit is a commercial text editor for Microsoft Windows, Linux and created in 1994 by Ian D. Mead. The editor contains tools for programmers, including macros, configurable syntax highlighting, code folding, file type conversions, project management, regular expressions for search-and-replace,...
Sublime Text 2
UltraCompare
TextMaker
TextMaker
TextMaker is a word processor developed by the Nuremberg based software company SoftMaker and available as part of the SoftMaker office suite...
StarOffice
StarOffice
StarOffice, known briefly as Oracle Open Office before its discontinuation in 2010, is a proprietary office suite. It was originally developed by StarDivision which was acquired by Sun Microsystems in 1999...

Writer

Local database

InterBase
InterBase
InterBase is a relational database management system currently developed and marketed by Embarcadero Technologies. InterBase is distinguished from other DBMSs by its small footprint, close to zero administration requirements, and multi-generational architecture...

7
Rekall
StarOffice
StarOffice
StarOffice, known briefly as Oracle Open Office before its discontinuation in 2010, is a proprietary office suite. It was originally developed by StarDivision which was acquired by Sun Microsystems in 1999...

Adabas D
Adabas D
Adabas D is a relational database management system owned by Software AG since 1994, when Software AG acquired SQL-Datenbanksysteme GmbH from Siemens Nixdorf AG....

(discontinued)

E-Commerce and Web Business

WebLogic
IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

WebSphere
WebSphere
IBM WebSphere refers to a brand of computer software products in the genre of enterprise software known as "application and integration middleware". These software products are used by end-users to create applications and integrate applications with other applications...

Application Server
Oracle Application Server
Oracle Application Server
In computing, the Oracle Application Server 10g , consists of an integrated, standards-based software platform. It forms part of Oracle Corporation's Fusion Middleware technology stack...

Financial Accounting

Global: Hansa Business Solutions
India & Asia: Kalculate
Locbook
Locbook
LOCbook is a Linux based suite of accounting applications. It is distributed as free software, but requires IBM Informix 4GL and SE or IDS database. Development began in 2005 and it was originally used as an in-house accounting program by a Shell Oil jobber...
LeftHand Mała Firma
LeftHand Mała Ksiegowość
LeftHand Pełna Księgowość
LeftHand Sprzedaż i Magazyn
LeftHand Stowarzyszenia i Fundacje

Project Management

2-plan Desktop
2-plan project management software
2-plan project management software consists of two project management tools. One is the 2-plan Desktop, "a free program for desktop scheduling" and other project manager related tasks...

, free project management software.
Cando Projects Server

Games

Airline Tycoon Deluxe
Aliens versus Predator
America's Army
America's Army
America's Army is a series of video games and other media developed by the United States Army and released as a global public relations initiative to help with recruitment. America's Army was conceived by Colonel Casey Wardynski and is managed by the U.S...

(discontinued)
Amnesia: The Dark Descent
Amnesia: The Dark Descent
Amnesia: The Dark Descent is a survival horror video game by Frictional Games, who previously developed the Penumbra series. Released for Windows, Mac OS X, and Linux platforms, the game features an unarmed protagonist exploring a dark and foreboding castle, while avoiding monsters and other...
And Yet It Moves
And Yet It Moves
And Yet It Moves is a single-player puzzle platform game developed by independent developer Broken Rules. The game was released on personal computer and WiiWare platforms, and the name itself is an English translation of Galileo Galilei's famous remark E pur si muove!-Gameplay:And Yet It Moves is...
Ankh
Ankh: Heart of Osiris
Ankh: Heart of Osiris
Ankh: Heart of Osiris is the third game in the Ankh series of computer games. It was released in Germany on October 30, 2006, and was released in the United Kingdom on May 18, 2007. The game contains three playable characters: Assil, Thara and the Pharaoh.-External links:**...
Astro Battle
A Tale in the Desert
A Tale in the Desert
A Tale in the Desert is a massively multiplayer online roleplaying game set in Ancient Egypt, run by the independent company eGenesis. The initial software download and all new content are free, with a monthly subscription required to play beyond the first 24 hours.-Gameplay:A Tale in the Desert...
Ballistics
Ballistics (video game)
Ballistics is a futuristic racing computer game developed by GRIN and published by Xicat Interactive in 2001. GRIN developed an arcade version of the game, released in 2002 featuring a unique reclined seating position cabinet by Triotech Amusement...
Bionic Heart
Bionic Heart
Bionic Heart is a visual novel video game for the Microsoft Windows, Mac OS X and Linux platforms. The game was developed and published by Tycoon Games and was released on July 17, 2009. On November 4, 2011 an updated version of the game was released and also a version without voice...
Bubble Shooter
Bubble Shooter
Bubble Shooter is a puzzle-shooter computer game originally developed for Microsoft Windows by Absolutist Games in 2000. A clone of Puzzle Bobble, it combines the features of puzzle, shooter, strategy and action games...
Cave Story
Civilization: Call to Power
Civilization: Call to Power
Civilization: Call to Power is a PC turn-based strategy game developed by Activision as a successor to the extremely successful Civilization computer game by Sid Meier. It was ported to Linux by Loki Software....
Cold War
Cold War (computer game)
Cold War is a video game developed by Czech developer Mindware Studios and published by DreamCatcher Games . The game is similar to the Splinter Cell series of games in that it uses a stealth-action system of gameplay...
Conquest of Elysium II
Conquest of Elysium II
Conquest of Elysium II is the title of a computer game produced by the Illwinter Game Design. Conquest of Elysium is a fantasy turn-based strategy game. The game can be played with up to eight human players. Single player against computer is possible...
Cute Knight
Cute Knight
Cute Knight is a casual life simulation role-playing video game with many possible endings and careers featuring a single female character. Gameplay is similar to the Japanese Princess Maker with more traditionally Western first-person perspective dungeons.-Gameplay:Cute Knight is a life...
Dark Horizons Lore: Invasion
Dark Horizons Lore: Invasion
Dark Horizons Lore: Invasion is a Mech simulation computer game developed by independent game studio Max Gaming Technologies and published by GarageGames. Built using the Torque Game Engine, the game is available for Windows, Mac OS X, and Linux...
Darwinia
Darwinia (computer game)
Darwinia is the second game by Introversion Software.-Plot:Darwinia was created as a digital theme world for artificially intelligent polygons by Dr. Sepulveda. Housed in a massive network of surplus Protologic 68000 machines from the 1980s, Darwinia is a world where the single-poly Darwinians,...
DEFCON
Defcon (computer game)
DEFCON is a real-time strategy game created by independent British game developer Introversion Software, developers of Darwinia, Multiwinia, and Uplink. The gameplay is reminiscent of the "big boards" that visually represented thermonuclear war in films such as Dr...
Descent³
Descent³
Descent 3 is the third game in the line of Descent computer games, well known for the use of six degrees of freedom and true 3D rendering technology....
Digital: A Love Story
Digital: A Love Story
Digital: A Love Story is a 2010 indie video game developed by Christine Love and released for free in February 2010. The game is a visual novel, with the player's actions unable to significantly change the course of the plot...
Dominions: Priests, Prophets and Pretenders
Dominions: Priests, Prophets and Pretenders
Dominions: Priests, Prophets and Pretenders is a turn-based strategy game designed by Illwinter Game Design, in which up to fourteen "pretender gods" at a time each battle for global dominance...
Dominions II: The Ascension Wars
Dominions 3: The Awakening
Dominions 3: The Awakening
Dominions 3: The Awakening is a fantasy turn-based strategy game created by Illwinter and published in 2006 by Shrapnel Games. It is the third game in the Dominions series, preceded by Dominions: Priests, Prophets and Pretenders and Dominions II: The Ascension Wars.The game combines a simple...
Doom 3
Doom 3
Doom 3 is a science fiction horror video game developed by id Software and published by Activision. An example of the first-person shooter genre, Doom 3 was first released for Microsoft Windows on August 3, 2004. The game was later adapted for Linux, as well as being ported by Aspyr Media for Mac...

(plus expansion pack Doom 3: Resurrection of Evil
Doom 3: Resurrection of Evil
Doom 3: Resurrection of Evil is a first-person shooter video game developed by Nerve Software and id Software. It was released for the PC on April 3, 2005, as an expansion pack for Doom 3 and on October 5, 2005, for the Xbox video game console...

)
Duke Nukem 3D
Duke Nukem 3D
Duke Nukem 3D is a first-person shooter computer game developed by 3D Realms and published by GT Interactive Software. The full version was released for the PC . It is a sequel to the platform games Duke Nukem and Duke Nukem II published by Apogee...
Dwarf Fortress
Dwarf Fortress
Slaves to Armok: God of Blood, Chapter II: Dwarf Fortress, also called Slaves to Armok II: Dwarf Fortress, but most commonly known simply as Dwarf Fortress, is a freeware computer game by Bay 12 Games for Microsoft Windows, Linux, and Mac OS X set in a high fantasy universe that combines aspects of...
Enemy Territory: Quake Wars
Enemy Territory: Quake Wars
Enemy Territory: Quake Wars is a first-person shooter video game, and is the follow-up to the 2005 title Quake 4. It is also the first game in the series to be rated T by the ESRB...
Eric's Ultimate Solitaire
Eric's Ultimate Solitaire
Eric's Ultimate Solitaire is a commercial solitaire game developed by Delta Tao Software for the Macintosh. The game was later ported to Linux by Loki Software....
Eschalon: Book I
Eschalon: Book I
Eschalon: Book I is an isometric turn-based computer role-playing game by Basilisk Games. In the style of classic computer role-playing games, it features a large and openly explorable game world, comprehensive management of character stats and skills, and a non-linear storyline...
Eschalon: Book II
Eschalon: Book II
Eschalon: Book II is an isometric, turn-based single player role-playing video game by Basilisk Games. Like the first game in the series, Eschalon: Book I, it features a large and openly explorable game world, a comprehensive management of character statistics and skills, and a non-linear...
Exile III:Ruined World
FizzBall
FizzBall
FizzBall is a cross-platform computer game in which the player bounces an object called a "FizzBall" around the screen.FizzBall was nominated for an award at the 2007 Independent Games Festival in San Francisco, and was named Arkanoid Game of the Year and Kid's Game of the Year by .-What the Game...

(discontinued)
Galcon
Galcon
Galcon is a series of real time strategy video games for Android, iPhone, Windows, Linux, Mac OS X and Flash, which were developed by Phil Hassey...
Gorky 17
Gorky 17
Gorky 17 is a turn-based tactics computer game developed by Polish developer Metropolis Software and published by Monolith Productions for Windows in 1999. The game was later ported to Linux by Hyperion Entertainment and published by Linux Game Publishing in 2006...
Grappling Hook
Grappling Hook (video game)
Grappling Hook is a first-person shooter video game which contains both platform and puzzle elements. It was released on September 18, 2009 for the Windows platform and on September 21 for Mac OS X, a Linux version was later released...
H-Craft Championship
H-Craft Championship
H-Craft Championship is a science fiction racing game developed by independent game studio Irrgheist. A Russian version of the game was later released by Akella...
Heavy Metal: F.A.K.K.²
Heavy Metal: F.A.K.K.²
Heavy Metal: F.A.K.K.² is a third-person shooter video game made by Ritual Entertainment in 2000. A sequel to the Heavy Metal 2000 animated movie, the game stars Julie in her quest to save her home planet of Eden from GITH, an ancient entity seeking to conquer the universe...
Heileen 2: The Hands of Fate
Heileen 2: The Hands of Fate
Heileen 2: The Hands of Fate is a visual novel video game for the Microsoft Windows, Mac OS X and Linux platforms. The game was developed and published by Tycoon Games and is the sequel to the original Heileen.-Plot:...
Heretic II
Heretic II
Heretic II is a fantasy action-adventure game developed by Raven Software and published by Activision in 1998 continuing the story of Corvus, the main character from its predecessor, Heretic....
Heroes of Might and Magic III
Heroes of Newerth
Heroes of Newerth
Heroes of Newerth is a free-to-play science fantasy, action real-time strategy game developed by S2 Games for Microsoft Windows, Mac OS X and Linux. The game was heavily inspired by the Warcraft III: The Frozen Throne custom map, Defense of the Ancients and is S2 Games' first game title in the...
Hyperspace Delivery Boy!
Hyperspace Delivery Boy!
Hyperspace Delivery Boy! is the first title released by video game production company Monkeystone Games. A puzzle/action game developed for the Pocket PC and released on December 23, 2001...
Inherit the Earth: Quest for the Orb
Inherit the Earth: Quest for the Orb
Inherit the Earth: Quest for the Orb is a computer game, developed by The Dreamers Guild and published by Jon Van Caneghem through New World Computing....
Inner Worlds
Inner Worlds (video game)
Inner Worlds is a 1996 fantasy platform game by Sleepless Software Inc. incorporating some RPG elements. The game is concentrated on a werewolf character called Nikita who travels through a magical world fighting monsters and learning spells.-Gameplay:...
Jack Keane
Jack Keane (video game)
Jack Keane is a 2007 adventure game developed by Deck13 Interactive, published by 10tacle Studios, and digitally distributed by Legacy Interactive. Jack Keane is an adventure game in the spirit of Monkey Island, with references to well-known computer games and classic movies...
Jets'n'Guns
Jets'n'Guns
Jets'n'Guns is a 2D, side-scrolling shoot 'em up computer game released in late 2004 for Microsoft Windows by RakeInGrass software. In April 2006, a version for Mac OS X was released. In December 2006 an expansion, Jets'n'Guns Gold, was released...
Knights and Merchants
Kohan: Immortal Sovereigns
Kohan: Immortal Sovereigns
Kohan: Immortal Sovereigns is the first game of the real-time strategy series Kohan, developed by TimeGate Studios. It was published for Windows by Strategy First, and ported to Linux by Loki Software, both in 2001. With a high fantasy setting, the game follows immortal beings named Kohan...
Lux
Machinarium
Machinarium
Machinarium is a puzzle point-and-click adventure game developed by Amanita Design. It was released on October 16, 2009 for Microsoft Windows, Mac OS X, Linux, on September 8, 2011 for iPad 2 on App Store and on November 21, 2011 for BlackBerry PlayBook. Demos were made available on September 30,...
Majesty Gold
Marble Blast Gold
Marble Blast Gold
Marble Blast Gold is a 3D platformer game. It was pre-installed on some Apple Inc. computers like the iMac and iBook. It is also available for Windows operating systems as well as various Linux distributions...
Medal of Honor: Allied Assault
Medal of Honor: Allied Assault
Medal of Honor: Allied Assault is a first-person shooter computer game developed by 2015, Inc. and created by Steven Spielberg. It is the 3rd installment of the Medal of Honor series...

(Unfinished Port -Beta)
MindRover
MindRover
Mind Rover is a video game, developed by CogniToy. The game, which can be thought of as an successor to the Learning Company's Robot Odyssey, revolves around two activities:* Assemble a virtual robots from a library of stock parts....
Mobility
Mobility (computer game)
Mobility is a computer game developed by Glamus as an initiative of DaimlerChrysler, with scientific data done by the Bauhaus-Universität Weimar...

- last Linux version is 2.0
Myth II: Soulblighter
Myth II: Soulblighter
Myth II: Soulblighter is a 1998 real-time tactics computer game for the PC and Macintosh developed by Bungie. It is a sequel to Myth: The Fallen Lords and the second game in the Myth series.-Gameplay:...
Neverwinter Nights
Neverwinter Nights
Neverwinter Nights , produced by BioWare and published by Infogrames , is a third-person perspective computer role-playing game that is based on third edition Dungeons & Dragons and Forgotten Realms rules. It was originally to be published by Interplay Entertainment, but the publisher's financial...

(plus expansion packs)
Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness
Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness
Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness is an episodic action-adventure video game series based on the webcomic Penny Arcade....
Out of the Park Baseball
Out of the Park Baseball
Out of the Park Baseball, abbreviated as OOTP, is a text-based baseball simulator for career, historical, and fictional play. OOTP was originally written in 1998, when lead developer Markus Heinsohn sought to combine realistic replay baseball simulation with career play to satisfy hardcore fans and...
Penumbra: Black Plague
Penumbra: Black Plague
Penumbra: Black Plague is the second installment of the Penumbra series of episodic computer games developed by Swedish developer Frictional Games. The story continues from the previous episode, Penumbra: Overture, showing the protagonist Philip moving away from the abandoned mine setting of the...
Penumbra: Overture
Penumbra: Overture
Penumbra: Overture is the first in a series of episodic first-person adventure games developed by Swedish developer Frictional Games. It was originally intended as the first episode of a trilogy. With the announcement of the second episode, Penumbra: Black Plague, it was stated that the second game...
Postal²
Postal²
Postal 2 is a first-person shooter video game by Running with Scissors, and it is the sequel to the 1997 game Postal. Both are intentionally highly controversial due to high levels of violence and stereotyping. Unlike its predecessor, Postal 2 is played completely in first-person based on the...
Prey
Prey (video game)
Prey is a first-person shooter video game developed by Human Head Studios , and published by 2K Games. The Xbox 360 version was ported by Venom Games. The game was initially released in North America and Europe on 11 July 2006...
Quake
Quake (series)
The Quake series is a line of first-person shooter video games produced by id Software.-Overview:The Quake series is somewhat unusual in that its focus changes frequently; the story of Quake II has nothing to do with Quake, and Quake III Arena has little to do with either of its predecessors...

(all versions)
Railroad Tycoon II
Railroad Tycoon II
Railroad Tycoon II is a game for the PC, Macintosh, PlayStation and Dreamcast in the Railroad Tycoon series. The Dreamcast version is a Gold Edition with improved graphics and gameplay...
Raptor: Call of the Shadows
Raptor: Call of the Shadows
Raptor: Call of the Shadows is a 2D raster graphics vertical scrolling shoot 'em up single player game for the x86 PC originally written for MS-DOS, by Cygnus Studios...

(discontinued)
Regnum Online
Regnum Online
Regnum Online is a fantasy massively multiplayer online role-playing game developed by NGD Studios, a game development studio located in Argentina. This game is also known as "Realms Online" in America...
Return to Castle Wolfenstein
Return to Castle Wolfenstein
Return to Castle Wolfenstein is a first person shooter video game published by Activision and originally released on November 19, 2001 for Microsoft Windows. It was made available on Steam on August 3, 2007. The single player game was developed by Gray Matter Interactive and Nerve Software...
Rise of the Triad
Rise of the Triad
Rise of the Triad: Dark War is a first-person shooter video game that was first released on February 17, 1995 and developed by Apogee Software . The members of the development team involved referred to themselves as "The Developers of Incredible Power"...
Robin Hood: The Legend of Sherwood
Robin Hood: The Legend of Sherwood
Robin Hood: The Legend of Sherwood is a 2002 stealth-based real-time strategy video game developed by Spellbound Studios. It is similar to games such as Desperados: Wanted Dead or Alive and the Commandos series. In the game, the player controls up to five characters in a setting based on the...
Rune
Rune (computer game)
Rune is a third-person action computer game developed by Human Head Studios which was released in late 2000. The game is based on Norse mythology, showing the conflict between the gods Odin and Loki and the build up to Ragnarok, the end of the world...
Savage 2
Savage: The Battle for Newerth
Savage: The Battle for Newerth
Savage: The Battle for Newerth is a science fantasy computer game that combines aspects of the real-time strategy and first-person shooter genres. It takes place in the distant future when humankind has rebuilt society following an apocalypse, but is threatened by intelligent beasts...
Serious Sam
Serious Sam
Serious Sam is the first game in the Serious Sam series. It is a first-person shooter created by the Croatian development house Croteam...

(all versions unfinished ports -Beta)
Shadowgrounds
Shadowgrounds
Shadowgrounds is a shoot 'em up for Microsoft Windows, GNU/Linux and Mac OS X, developed by Frozenbyte. The game takes place on a space colony on Ganymede which is being attacked by aliens...
Shadowgrounds Survivor
Shadowgrounds Survivor
Shadowgrounds Survivor is a shooter game developed by Frozenbyte and the sequel to Shadowgrounds. It has three playable characters, a RPG-like upgrade system for weapons and characters, a survival mode, graphics enhanced from its predecessor, an integrated physics engine, and a soundtrack by Ari...
Shogo: Mobile Armor Division
Shogo: Mobile Armor Division
Shogo: Mobile Armor Division is a first person shooter video game released by Monolith Productions in 1998. It was the first game to use Monolith's flagship Lithtech engine. It has heavy influences from Japanese anime, particularly Patlabor, Appleseed, and the various Gundam series...
Sid Meier's Alpha Centauri
Sid Meier's Alpha Centauri
Sid Meier's Alpha Centauri is the critically acclaimed science fiction 4X turn-based strategy video game sequel to the Civilization series. Sid Meier, designer of Civilization, and Brian Reynolds, designer of Civilization II, developed Alpha Centauri after they left MicroProse to join the newly...
SimCity 3000
SimCity 3000
SimCity 3000 is a city building simulation personal computer game and the third major installment in the SimCity series. It was published by Electronic Arts and developed by series creator Maxis, a wholly owned subsidiary of EA...
SiN
Soldier of Fortune
Space Combat
Space Combat
Space Combat is a game produced by Laminar Research to provide a simulation of space combat with accurate physics, unlike most other games of the same genre...
Spheres of Chaos
Spheres of Chaos
Spheres of Chaos is a space shooter created by Iain McLeod with the basic gameplay being similar to the game Asteroids. The game uses very bright colours and patterns, with many enemies on screen at once. The audio is similar to that of Robotron: 2084 and Defender. The game was originally written...
Summer Session
Summer Session
Summer Session is a dating simulation video game for the Microsoft Windows, Mac OS X and Linux platforms. The game was developed and published by Hanako Games and Tycoon Games. It uses anime-style graphics and is written in English...
Terminus
The Labyrinth of Time
The Labyrinth of Time
The Labyrinth of Time is a graphic adventure computer game created by Terra Nova Development, a two-man team composed of Bradley W. Schenck and Michal Todorovic. Intended to be the first in a series of games, The Labyrinth of Time was less successful than similar graphic adventures released around...
Theocracy
Theocracy (computer game)
Theocracy is a real-time strategy game for the PC developed by Philos Laboratories and published by Ubisoft in 2000. The game takes place in Mexico and Central America in the 15th century...
Tibia
Tibia (computer game)
Tibia is a massively multiplayer online roleplaying game created by CipSoft GmbH. It is one of the oldest MMORPGs and was considered most noteworthy in its early years; however, with the development of MMORPGs its popularity has grown much slower than other gaming communities...
Toribash
Toribash
Toribash is a turn-based tactical martial arts fighting game using physics based attacks, created by Hampus Söderström, a Swedish software developer. Toribash was a "Best Game Idea" finalist at the 2006 Swedish Game Awards....
Tribal Trouble
Tribal Trouble
Tribal Trouble is a real-time strategy video game for Microsoft Windows, Linux and Mac OS X. The game pits natives of tropical islands against invading Vikings...
Tribes II
Turbo Sliders
Turbo Sliders
Turbo Sliders is a racing game with a top-down perspective that allows up to 20 network drivers compete against each other over the internet. It was developed by Antti Mannisto and published by Jollygood Games for the Windows and Linux platforms in 2003...
Ultima Online
Ultima Online
Ultima Online is a graphical massively multiplayer online role-playing game , released on September 24, 1997, by Origin Systems. It was instrumental to the development of the genre, and is still running today...
Unreal Tournament
Unreal Tournament
Unreal Tournament is a futuristic first-person shooter video game co-developed by Epic Games and Digital Extremes. It was published in 1999 by GT Interactive. Retrospectively, the game has also been referred to as UT99 or UT Classic to differentiate it from its numbered sequels...

(UT3 still in development)
Uplink
Uplink (computer game)
Uplink is a video game released in 2001 by the British software company Introversion Software. On 23 August 2006, it was made available for purchase on Valve's Steam service and on 24 March 2011 it was made available for purchase from the Ubuntu Software Center...
Vendetta Online
Vendetta Online
Vendetta Online is a twitch-based, science fiction massively multiplayer online role-playing game developed by Guild Software for the operating systems Android, Linux, Mac OS X, and Microsoft Windows...
X2: The Threat
World of Goo
World of Goo
World of Goo is a physics-based puzzle game by 2D Boy, an independent game developer consisting of Kyle Gabler and Ron Carmel, both former Electronic Arts employees, released for Microsoft Windows, Mac OS X, Linux, iOS, Android and WiiWare...
X-Plane
Yohoho! Puzzle Pirates
Yohoho! Puzzle Pirates
Yohoho! Puzzle Pirates is a massively multiplayer online role-playing game developed by Three Rings Design. The player takes the role of a pirate, adventuring on the high seas and pillaging money from roaming enemy ships . The mechanics of Puzzle Pirates are driven by puzzles...

C++
C++
C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. It is regarded as an intermediate-level language, as it comprises a combination of both high-level and low-level language features. It was developed by Bjarne Stroustrup starting in 1979 at Bell...

IDEs
Integrated development environment
An integrated development environment is a software application that provides comprehensive facilities to computer programmers for software development...

Code Crusader
CodeWarrior
CodeWarrior
CodeWarrior is an integrated development environment for the creation of software that runs on a number of embedded systems. Prior to the acquisition of the product by Freescale Semiconductor, versions existed for Macintosh, Microsoft Windows, Linux, Solaris, PlayStation 2, Nintendo GameCube,...
KDE Studio Gold
Kylix
TimeStorm
Understand for C++
SlickEdit
SlickEdit
SlickEdit, previously known as Visual SlickEdit, is a cross-platform commercial source code editor by SlickEdit, Inc. SlickEdit provides syntax highlighting, code navigation and customizable keyboard shortcuts. Versions from 2007 and later also support programmable code...

Compilers

Intel C++ Compiler
Intel C++ Compiler
Intel C++ Compiler is a group of C and C++ compilers from Intel Corporation available for GNU/Linux, Mac OS X, and Microsoft Windows....
Intel Fortran Compiler
Intel Fortran Compiler
Intel Fortran Compiler, also known as IFORT, is a Fortran compiler developed by Intel. It generates code for IA-32, Intel 64 processors. Compilers are available for Linux, Microsoft Windows and Mac OS X. On Windows, it is known as Intel Visual Fortran...
Lahey/Fujitsu Fortran Compiler
XL C/C++ Compiler, IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...
XL Fortran Compiler, IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

WWW

Abyss Web Server - original open source version is being developed as part of xmlrpc-c project now.
Zeus
Zeus Technology
Zeus Technology, Ltd. is a software company based in Cambridge, England. Zeus Technology, Inc. is a wholly owned US subsidiary.- Timeline :...

Web Server
Zeus Web Server
Zeus Web Server is a proprietary web server for Unix and Unix-like platforms . Support for AIX, Tru64, and Mac OS X was dropped on 10 June 2008....
Adobe JRun
CGIProxy
CGIProxy
CGIProxy is, as its name suggests, a CGI proxy software package. A CGI proxy appears to a user as a web page that allows the user to access a different site through it....

- source available for non-commercial use.

DB Engine

Sybase
Sybase
Sybase, an SAP company, is an enterprise software and services company offering software to manage, analyze, and mobilize information, using relational databases, analytics and data warehousing solutions and mobile applications development platforms....

Adaptive Server Enterprise
IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

DB2
IBM DB2
The IBM DB2 Enterprise Server Edition is a relational model database server developed by IBM. It primarily runs on Unix , Linux, IBM i , z/OS and Windows servers. DB2 also powers the different IBM InfoSphere Warehouse editions...
Oracle
Oracle database
The Oracle Database is an object-relational database management system produced and marketed by Oracle Corporation....
Informix
Informix
IBM Informix is a family of relational database management system developed by IBM. It is positioned as IBM's flagship data server for online transaction processing as well as integrated solutions...

E-mail / Personal information manager
Personal information manager
A personal information manager is a type of application software that functions as a personal organizer. The acronym PIM is now, more commonly, used in reference to Personal information management as a field of study...

/ Groupware Servers

CommuniGate Pro
Bynari
Lotus Domino
NetMail
NetMail
M+NetMail is an ISP-grade E-mail package by Messaging Architects. It is designed to deliver scalable messaging and calendaring services, using Internet-standard protocols , across a large enterprise, or to a large group of users who are not particularly associated...
Novell
Novell
Novell, Inc. is a multinational software and services company. It is a wholly owned subsidiary of The Attachmate Group. It specializes in network operating systems, such as Novell NetWare; systems management solutions, such as Novell ZENworks; and collaboration solutions, such as Novell Groupwise...

GroupWise
Open-Xchange
Open-Xchange
Open-Xchange Server is an open source project sponsored by Open-Xchange, Inc., developing collaboration software; i.e. email, calendaring, address book, etc. Product offerings based on Open-Xchange Server are marketed under the brand of Open-Xchange Server and various other names, e.g. 1&1...
Scalix
Scalix
Scalix is an e-mail and groupware server that runs on Linux, licensed under the Scalix Public License .Scalix provides e-mail, group calendaring and other collaborative software, which are standard in groupware...

(based on HP OpenMail)
SCOoffice Mail Server
Teamware Office
Zarafa

Product data/product lifecycle management (PDM
Product Data Management
Product data management is the business function often within product lifecycle management that is responsible for the creation, management and publication of product data...

/PLM
Product lifecycle management
In industry, product lifecycle management is the process of managing the entire lifecycle of a product from its conception, through design and manufacture, to service and disposal...

)

Siemens Teamcenter

Managed File Transfer
Managed File Transfer
Managed file transfer ' refers to software solutions that facilitate the secure transfer of data, in flight and at rest, from one computer to another through a network . MFT solutions are often built to support the FTP network protocol...

Serv-U File Server - Managed file transfer server, supporting FTP, FTPS
FTPS
FTPS is an extension to the commonly used File Transfer Protocol that adds support for the Transport Layer Security and the Secure Sockets Layer cryptographic protocols....

, SFTP
SFTP
SFTP may refer to the following.Relating to file transfer:* SSH File Transfer Protocol, a network protocol designed to provide secure file transfer and manipulation facilities over SSH...

, HTTP, and HTTPS
Https
Hypertext Transfer Protocol Secure is a combination of the Hypertext Transfer Protocol with SSL/TLS protocol to provide encrypted communication and secure identification of a network web server...

file transfer methods as well as numerous other features.

Mathematics

Magma
Magma computer algebra system
Magma is a computer algebra system designed to solve problems in algebra, number theory, geometry and combinatorics. It is named after the algebraic structure magma...
Maple
Maple (software)
Maple is a general-purpose commercial computer algebra system. It was first developed in 1980 by the Symbolic Computation Group at the University of Waterloo in Waterloo, Ontario, Canada....
Mathematica
Mathematica
Mathematica is a computational software program used in scientific, engineering, and mathematical fields and other areas of technical computing...
MATLAB
MATLAB
MATLAB is a numerical computing environment and fourth-generation programming language. Developed by MathWorks, MATLAB allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages,...

CAD/CAM
Computer-aided manufacturing
Computer-aided manufacturing is the use of computer software to control machine tools and related machinery in the manufacturing of workpieces. This is not the only definition for CAM, but it is the most common; CAM may also refer to the use of a computer to assist in all operations of a...

/CAE
Computer-aided engineering
Computer-aided engineering is the broad usage of computer software to aid in engineering tasks. It includes computer-aided design , computer-aided analysis , computer-integrated manufacturing , computer-aided manufacturing , material requirements planning , and computer-aided planning .- Overview...

BricsCAD
Bricscad
Bricscad is a CAD package developed by Bricsys. Until release 10 it was built using the IntelliCAD engine. It is designed for Windows and is among the few commercially supported CAD packages which runs on Linux....

is an IntelliCAD
IntelliCAD
IntelliCAD is a CAD-software programming toolkit and API published by the IntelliCAD Technology Consortium . IntelliCAD aims to emulate the basic interface and functions of AutoCAD. Unlike typical CAD programs, ITC IntelliCAD is not sold directly to end users...

based commercial CAD solution.
VariCAD
VariCAD
VariCAD is a computer program for 3D/2D CAD and mechanical engineering which has been developed since 1988. VariCAD runs on Windows and Linux. It features many tools for 3D modeling and 2D drafting...
CYCAS by Verlag Frese
Siemens NX
QCAD
QCad
QCad is a computer-aided design software package for 2D design and drafting. It is available for Linux, Mac OS X, Unix and Microsoft Windows....

professional is built on the QCAD opensource package.
CATIA
CATIA
CATIA is a multi-platform CAD/CAM/CAE commercial software suite developed by the French company Dassault Systemes...

by Dassault Systèmes
Dassault Systemes
Dassault Systèmes S.A. is a leading company specializing in 3D and PLM software.Dassault Systèmes develops and markets PLM application software and services that support industrial processes and provide a 3D vision of the entire lifecycle of products from conception to maintenance to recycling...

Game makers

Maker3D is a 3D RPG creator software
Tululoo Game Maker is a complex game creation environment

Video game console emulators

BoycottAdvance
BoycottAdvance
BoycottAdvance is a cross-platform Game Boy Advance emulator with a wide variety of features:* Good compatibility with most public and commercial games* Full sound emulation...

- Game Boy Advance
Game Boy Advance
The is a 32-bit handheld video game console developed, manufactured, and marketed by Nintendo. It is the successor to the Game Boy Color. It was released in Japan on March 21, 2001; in North America on June 11, 2001; in Australia and Europe on June 22, 2001; and in the People's Republic of China...

emulator, freeware
ePSXe
EPSXe
ePSXe is a PlayStation emulator for x86-based PC hardware with Microsoft Windows or Linux. It was written by three authors, using the aliases "Calb", "_Demo_", and "Galtor"...

- Sony Playstation emulator, freeware
MAME
MAME
MAME is an emulator application designed to recreate the hardware of arcade game systems in software on modern personal computers and other platforms. The intention is to preserve gaming history by preventing vintage games from being lost or forgotten...

- emulators for multiple arcade machines; source available for non-commercial use
Regen - Sega Genesis / Mega Drive emulator

Virtual Machine Emulator

Parallels Workstation
Parallels Workstation
Parallels Workstation is the first commercial software product released by Parallels, Inc., a developer of desktop and server virtualization software...
QuickTransit
QuickTransit
QuickTransit was a cross-platform virtualization program developed by Transitive Corporation. It allowed software compiled for one specific processor and operating system combination to be executed on a different processor and/or operating system architecture without source code or binary...
VMware Workstation
VMware Workstation
VMware Workstation is a virtual machine software suite for x86 and x86-64 computers from VMware, a division of EMC Corporation, which allows users to set up multiple x86 and x86-64 virtual machines and use one or more of these virtual machines simultaneously with the hosting operating system...
VMware Player
VMware Player
VMware Player is a freeware virtualization software package from VMware, Inc. . VMware Player can run virtual appliances. VMware Player can also create virtual machines since version 3.0...
VMware vCenter Converter
VirtualBox
VirtualBox
Oracle VM VirtualBox is an x86 virtualization software package, originally created by software company Innotek GmbH, purchased by Sun Microsystems, and now developed by Oracle Corporation as part of its family of virtualization products...

(before version 4.x there was a closed-source edition, but now there is only one edition, and is open-source)
Win4Lin
Win4Lin
Win4Lin was a proprietary software application for Linux which allowed users to run a copy of Microsoft Windows 95, 98, Me, 2000 or XP applications on their Linux desktop.-Overview:...

(discontinued and unmaintained)

Windows Compatibility Layer

Cedega Windows games compatibility layer (Cedega is based on the free
Free software
Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

compatibility layer Wine
Wine (software)
Wine is a free software application that aims to allow computer programs written for Microsoft Windows to run on Unix-like operating systems. Wine also provides a software library, known as Winelib, against which developers can compile Windows applications to help port them to Unix-like...

.)
CrossOver
Crossover
-Fiction and media:* Fictional crossover, a storyline combining characters or settings from separate fictional properties** Fictional crossovers in video games* Crossover , a 2002 documentary by Justin Lin...

(Crossover is based on the free
Free software
Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

compatibility layer Wine
Wine (software)
Wine is a free software application that aims to allow computer programs written for Microsoft Windows to run on Unix-like operating systems. Wine also provides a software library, known as Winelib, against which developers can compile Windows applications to help port them to Unix-like...

.)