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CocoaRestClientPostman
Free

Free and open source.

 Freemium

A free tier covers individual use with limits on collaborators, collection runs and…

macOS Windows, macOS, Linux, Web, Browser extension
  • Native Cocoa app with low memory use
  • Pretty prints JSON and XML responses
  • The most widely used API client, so collections and tutorials for it are everywhere
  • Collections with environments, pre-request and test scripts, and a built-in runner
  • macOS only
  • Fewer collaboration and scripting features than larger API platforms
  • Built around a cloud workspace, and an account is effectively required
  • Offline and local-only use has become harder over successive versions
Downloadable app Downloadable app, Web application, Browser extension
Open source Closed source
License not stated License not stated
No account needed Account needed
Not stated if it works offline Needs internet

Checked October 2, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.