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Mergely vs NextDiff

Both stand on file comparison software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Mergely

Free plan APISelf-hostedWeb

Mergely provides browser-based two-document comparison and merge controls, with an API for web application integration. Consider its two-way scope, public link sharing and lack of built-in syntax highlighting when deciding whether it fits.

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NextDiff

Free plan Windows

NextDiff pairs text and folder comparisons with editing, merging, and adjustable comparison options. Its platform is limited to Windows 10 and 11, and document-format extraction requires optional Apache Tika support.

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The facts

MergelyNextDiff
Free planYesYes
Open sourceNot publishedNot published
Runs onAPI, Self-hosted, WebWindows
Lowest paid planFree or on requestFree or on request
Plans published21
MakerNot publishedNot published
Websitemergely.comtkosoft.com
On file comparison software#8 of 33#12 of 33

Mergely: what it does well

  • Compares documents in the browser without server calls
  • Marks added, deleted and changed text
  • Can ignore whitespace, case or accented characters
  • Offers an API for embedding and merge controls
  • Free under GPL, LGPL and MPL licenses

What to know first

  • Saved diffs are public to anyone with the link
  • Does not support three-way merge
  • Built-in syntax highlighting is unavailable
  • Angular component is out of date

NextDiff: what it does well

  • Free for personal and commercial use.
  • Highlights differences within lines and across lines.
  • Can compare folders and subfolders.
  • Offers multiple comparison-ignore options.
  • Runs locally without telemetry, according to the maker.

What to know first

  • Available for Windows 10 and 11 only.
  • Apache Tika support is optional.
  • No free trial is listed.

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