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Add to SafariWhen comparing DiffMerge vs difftastic, the Slant community recommends DiffMerge for most people. In the question“What are the best diff tools for Git?” DiffMerge is ranked 8th while difftastic is ranked 18th. The most important reason people chose DiffMerge is:
DiffMerge is free of charge to download and use for both commercial and open source projects. There's no license needed. However, people who want to contribute to the project monetarily [can do so](https://www.sourcegear.com/diffmerge/register).
Specs
Question Ranking
Pros
Pro Completely free
DiffMerge is free of charge to download and use for both commercial and open source projects. There's no license needed. However, people who want to contribute to the project monetarily can do so.
Pro Cross platform
DiffMerge is cross platform and is available for all major operating systems. This means WIndows, Linux and OSX
Pro Folder compare
Pro Three way merges
DiffMerge supports three way merges.
Pro Can diff directories
Pro Syntactic diffing
Down to a character.
Pro Cross platform
Linux, Mac and Windows.
Pro Supports over 20 languages (and some other syntax)
c, c++, c#, java, python, go, javascript, json, rust, sql, html, css and more.
See here.
Pro Language autodetection
Pro Has a manual
Pro Supports other version control tools
Like Mercurial.
Pro Works with Magit
Pro MIT license
Pro Has syntax highlighting
That can be turned off.
Cons
Con Startup time can be slow
DiffMerge's startup time can be quite slow sometimes.
Con Can be confused with syntax at times
