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Nightingale vs Postman: catalog facts
Nightingale	Postman
Free Available from the Microsoft Store and GitHub releases.	Freemium A free tier covers individual use with limits on collaborators, collection runs and…
Windows	Windows, macOS, Linux, Web, Browser extension
Native Windows app that is light on resources Variables and environments	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
Windows only Smaller feature set 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
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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