cwdiff
5.7#28 in file comparison softwareFree planFree planLinux
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cwdiff suits Linux command-line users who want to compare directories with wdiff and see colorized differences. Mercurial users can configure it as an extdiff command.
Diffchecker suits developers, writers, editors, and data or operations teams who need to compare text or other file types. Its desktop app also suits users who need offline comparisons.