kdiff3
Beyond Compare
WinMerge
Meld
Araxis Merge
DiffMerge
P4Merge
Devart Code Compare
Scribblar
OpenBoard
Conceptboard
Microsoft Whiteboard
IDroo
Twiddla
Cr4yon
Whiteboard Team
kdiff3
ScribblarBeyond Compare - Beyond Compare allows you to compare files and folders.
OpenBoard - The OpenBoard software is an interactive white board software.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Conceptboard - Instant Whiteboards for Teams & Projects
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Microsoft Whiteboard - The canvas where ideas, content, & people come together.