Tweak7 (previously TweakVista) is a software tool for Windows Vista and Windows 7 that allows modification of various OS-specific functions, most notably the settings surrounding the Desktop Window Manager, User Account Control 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. Tweak7 is developed by Stardock and distributed as part of their Object Desktop suite. It is co-distributed by Advanced PC Media.