Tweak7 is a software tool for Windows Vista

Windows Vista

Windows Vista is an operating system released in several variations developed by Microsoft for use on personal computers, including home and business desktops, laptops, tablet PCs, and media center PCs...

 and Windows 7 that allows modification of various OS-specific functions, most notably the settings surrounding the Desktop Window Manager

Desktop Window Manager

Desktop Window Manager is the window manager in Windows Vista and Windows 7 that enables the Windows Aero graphical user interface and visual theme. The Desktop Window Manager requires video cards supporting DirectX 9.0 and Shader Model 2.0. DWM is not included with Windows Vista Starter edition...

, User Account Control

User Account Control

User Account Control is a technology and security infrastructure introduced with Microsoft's Windows Vista and Windows Server 2008 operating systems, with a more relaxed version also present in Windows 7 and Windows Server 2008 R2...

 and startup programs. A beta version became available in July 2005, with a complete overhaul in June 2007. A Windows 7 version was released in October 2009.

The program offers changes on two levels - a first level for non-technical users with descriptions in "plain language", and a second level for power user

Power user

A power user is a user of a personal computer who has the ability to use advanced features of programs which are beyond the abilities of "normal" users, but is not necessarily capable of programming and system administration...

s. It was recommended by Personal Computer World

Personal Computer World

Personal Computer World was a long-running British Computer magazine.Although for at least the last decade it contained a high proportion of Windows PC content , the magazine's title was not intended as a specific reference to this...

as "a very useful tool that doesn’t require advanced knowledge."

Tweak7 is developed by Stardock

Stardock

Stardock Corporation is a software development company founded in 1991 and incorporated in 1993 as Stardock Systems. Stardock initially developed for the OS/2 platform, but was forced to switch to Windows due to the collapse of the OS/2 software market between 1997 and 1998...

 and distributed as part of their Object Desktop

Object Desktop

Object Desktop is a software subscription service created by Stardock for OS/2 and relaunched for Windows in 1997....

suite. It is co-distributed by Advanced PC Media.