Keka is a Mac OS X

Mac OS X

Mac OS X is a series of Unix-based operating systems and graphical user interfaces developed, marketed, and sold by Apple Inc. Since 2002, has been included with all new Macintosh computer systems...

 frontend GUI

Gui

Gui or guee is a generic term to refer to grilled dishes in Korean cuisine. These most commonly have meat or fish as their primary ingredient, but may in some cases also comprise grilled vegetables or other vegetarian ingredients. The term derives from the verb, "gupda" in Korean, which literally...

 of p7zip

P7zip

p7zip is a port of the command line version of the 7-Zip file archiver to POSIX-conforming operating systems, such as Unix, Linux, FreeBSD, Windows NT and Mac OS X. It is free software, available under the GNU Lesser General Public License....

, the UNIX

Unix

Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...

 port of 7-Zip

7-Zip

7-Zip is an open source file archiver. 7-Zip operates with the 7z archive format, but can read and write several other archive formats. The program can be used from a command line interface, graphical user interface, or with Microsoft Windows shell integration. 7-Zip began in 1999 and is actively...

. It allows users to compress files and folders into files that are usually of a smaller size that can be extracted afterwards for use again. 7-Zip, using the .7z format, is a very high compression format that in many cases beats ZIP

ZIP (file format)

Zip is a file format used for data compression and archiving. A zip file contains one or more files that have been compressed, to reduce file size, or stored as is...

 in file size. Keka allows you to compress and extract many other formats in a GUI as well. Because it uses p7zip and many other Unix-only compression libraries, and also uses Cocoa

Cocoa (API)

Cocoa is Apple's native object-oriented application programming interface for the Mac OS X operating system and—along with the Cocoa Touch extension for gesture recognition and animation—for applications for the iOS operating system, used on Apple devices such as the iPhone, the iPod Touch, and...

, it is Mac OS X only and cannot be ported to Microsoft Windows

Microsoft Windows

Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

 or 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...

.

Supported extraction formats

• RAR
  RAR (file format)
  RAR stands for Roshal ARchive. It is a proprietary archive file format that supports data compression, error recovery, and file spanning...
  
   (.rar)
• ACE
  ACE (file format)
  In computing, ACE is a proprietary data compression archive file format developed by Marcel Lemke, and later bought by e-merge GmbH. The peak of its popularity was 1999—2001, when it provided slightly better compression rates than RAR, which has since become more popular.-WinAce:WinAce, maintained...
  
   (.ace) only on PPC machines
• 7z
• Lzma
• Zip
• Tar
• Gzip
• Bzip2
• ISO
• EXE
• CAB
• PAX

Supported compression formats

• 7z (.7z)
• ZIP
  ZIP (file format)
  Zip is a file format used for data compression and archiving. A zip file contains one or more files that have been compressed, to reduce file size, or stored as is...
  
   (.zip)
• Gzip (.gz)
• Bzip2 (.bz2)
• Tar
  Tar (file format)
  In computing, tar is both a file format and the name of a program used to handle such files...
  
  (.tar)

External links

• Official page of Keka
• Project page of Keka