This is an old version of WinMerge, for the latest version go to the download page.
WinMerge 2.2
WinMerge is an Open Source (GPL) visual text file differencing and merging tool for Windows. It is highly useful for determing what has changed between project versions, and then merging changes between versions.
Features
- Visual differencing and merging of text files
- Flexible editor with syntax highlighting
- Handles DOS, UNIX and MAC text file formats
- Unicode support
- Difference pane shows current difference in two vertical panes
- Location pane shows map of files compared
- Highlights differences inside lines
- File filters in directory diff
- Moved lines detection in file compare
- Shell Integration
- Rudimentary Visual SourceSafe and Rational ClearCase integration
- Archive file support using 7-zip
- Plugins
- Localizable interface via resource DLL
- HTML-based Manual
Screenshot

See the screenshots page for more screenshots.
Installation
Just download the installer and double-click it.
Or you may simply unzip the binary zip package into the desired location, and run
WinMergeU.exe (except for Windows 98/ME users who should use WinMerge.exe).
For more details please look at the Installation section from the Manual.
Using WinMerge
You can use the online Manual, or you can download a copy.
Here is the current change history.