A graphical file-comparison program published by Microsoft: http://www.grigsoft.com/download-windiff.htm
Read MoreEnable or Disable Windows Functions to Improve Security: http://www.xp-antispy.org
Read MoreExplore and analyze compiled .NET assemblies, viewing them in C#, Visual Basic and IL: http://www.red-gate.com/products/reflector.
Read MoreMediaWiki is a free software wiki package written in PHP: http://www.mediawiki.org/wiki/MediaWiki.
A useful little color picker that grabs the pixel under your mouse and transforms it into a number of different color formats: http://www.colorschemer.com/colorpix_info.php.
Read MoreWinCDEmu is an open-source software that allows mounting CD/DVD images. It supports ISO, CUE, NRG, MDS/MDF, CCD, IMG formats: http://wincdemu.sysprogs.org.
Read MoreInno Setup is a free installer for Windows programs: http://www.jrsoftware.org/isinfo.php.