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Hoppscotch vs Nightingale: catalog facts
Hoppscotch	Nightingale
Freemium Free and open source under the MIT licence, including self-hosting. A paid cloud plan…	Free Available from the Microsoft Store and GitHub releases.
Windows, macOS, Linux, Web, Self-hosted, Browser extension	Windows
Opens in a browser tab with nothing to install HTTP, GraphQL, WebSocket, Server-Sent Events, Socket.IO and MQTT	Native Windows app that is light on resources Variables and environments
The browser version needs an extension or the desktop app to reach local services Team collaboration features are the paid part	Windows only Smaller feature set than larger API platforms
Web application, Downloadable app, Self-hosted, Browser extension	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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