Beyond Compare - Beyond Compare allows you to compare files and folders.
Communifire - Enterprise Social Collaboration Software
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
DigitalChalk - Online Training Software and Learning Management System (LMS)
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Workplace by Facebook - Connect everyone in your company and turn ideas into action.