WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Meld - Mac Port - This is actually Meld itself ported to Mac.
AptDiff - AptDiff is a visual text / binary files comparison and merging utility for Windows.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
WinDiff - Download Windiff : free files and folders comparison tool
CompareMerge - CompareMerge is a software tool for file comparison and merging text-like files. It is useful for determining what has changed between versions, and then merging changes between...