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Advanced REST Client vs CocoaRestClient: catalog facts
Advanced REST Client	CocoaRestClient
Free Free to download; the source is published on GitHub.	Free Free and open source.
macOS	macOS
Dedicated desktop app for manual HTTP and REST testing Source code is public and the repository is still active	Native Cocoa app with low memory use Pretty prints JSON and XML responses
No releases published on the GitHub releases page License is not clearly identified in the repository metadata	macOS only Fewer collaboration and scripting features than larger API platforms
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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