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Postman vs CocoaRestClient: catalog facts
Postman	CocoaRestClient
Freemium A free tier covers individual use with limits on collaborators, collection runs and…	Free Free and open source.
Windows, macOS, Linux, Web, Browser extension	macOS
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	Native Cocoa app with low memory use Pretty prints JSON and XML responses
Built around a cloud workspace, and an account is effectively required Offline and local-only use has become harder over successive versions	macOS only Fewer collaboration and scripting features than larger API platforms
Downloadable app, Web application, Browser extension	Downloadable app
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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