Diff Suite
5.9#21 in diff and merge toolsFree planFree planWeb
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Diff Suite suits people who need to compare or merge two text files in a browser, including users of the listed desktop systems, phones, or tablets. It may also suit those who want local file handling and line-editing tools without a sign-up.
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.