Free Differencing Software

MSIDIFF by Dennis Bareis

MSIDIFF is freeware to compare or disassemble Windows Installer databases (a "MSI to TEXT" utility). While it is a command line based tool, the installer creates shell extensions so that the decompile operations can be invoked by right clicking on a file in Explorer. The output can be processed by my MAKEMSI tool to automate the change in future.

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WinMerge by Thingamahoochie Software

An Open Source visual text file differencing and merging tool for Win32 platforms. It is highly useful for determing what has changed between project versions, and then merging changes between versions. Features include: diff / merge, directory comparison, directory recursion, Visual SourceSafe integration, and a simple integrated editor. User interface translated to several languages.

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