Beyond Compare - Beyond Compare allows you to compare files and folders.
Slack - A messaging app for teams who see through the Earth!
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Jostle - A new kind of employee intranet that drives engagement & workplace culture. Achieves social participation in work relevant way. Participation rates are over 85%.