PAYWARE
- Ultra Edit (win + linux) – http://www.ultraedit.com/products/ultracompare/pro_vs_lite.html
- Beyond Compare (win + linux) – http://www.scootersoftware.com/
- Araxis Merge (win + osX) – http://www.araxis.com/merge/index.html
- ExamDiff Pro (win) – http://www.prestosoft.com/edp_examdiffpro.asp
- ECMerge (win, osX, linux) – http://www.elliecomputing.com/Home/default.asp
- MergePlant (win) – http://www.mikado-ltd.com/
- Changes (OSX) http://www.changesapp.com
- Deltopia DeltaWalker (win, osx, linux) http://www.deltopia.com/
- Compare++ (win) http://www.coodesoft.com/index.html
- Smart Differencer (win) http://www.semanticdesigns.com/Products/SmartDifferencer
FREEWARE
- Pretty Diff (web) – http://prettydiff.com/
- FileMerge (OSX) – http://en.wikipedia.org/wiki/Apple_Developer_Tools#FileMerge
- Tortoise SVN (win) – http://tortoisesvn.net/
- WinMerge (win) – http://winmerge.org/
- ExamDiff (win) – http://www.prestosoft.com/ps.asp?page=edp_examdiff
- Diff Merge from SourceGear (win, linux, OSX) – http://www.sourcegear.com/diffmerge/index.html
- Perforce Merge (win + linux + OSX) – http://www.perforce.com/perforce/products/merge.html
- meld (linux) – sudo apt-get install meld http://meld.sourceforge.net/
- Vimdiff – vim distribution
- KDiff3 – http://kdiff3.sf.net/
- ediff – EMacs distribution
- Tiny Hexer
- Kompare (KDE, linux) – http://www.caffeinated.me.uk/kompare/
- tkdiff (win, linux, osX) – http://tkdiff.sourceforge.net
- Code Compare (win) – http://www.devart.com/codecompare/
- OOP-DIFF (win) – http://www.schneidersoft.com/Products/OOP-DIFF/OOP-DIFF.aspx