Beyond Compare - Beyond Compare allows you to compare files and folders.
Community Questions for Confluence - Keep questions and answers in one place with an engaging, community-driven Q&A discussion forum, powered by Confluence
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Question2Answer - A Q&A site helps an online community to share knowledge.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Stack Overflow for Teams - Everything you love about Stack Overflow in a private space.