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Hoppscotch vs Scalar API Client: catalog facts
Hoppscotch	Scalar API Client
Freemium Free and open source under the MIT licence, including self-hosting. A paid cloud plan…	Freemium The open-source client is free; the wider Scalar platform has commercial offerings.
Windows, macOS, Linux, Web, Self-hosted, Browser extension	Web
Opens in a browser tab with nothing to install HTTP, GraphQL, WebSocket, Server-Sent Events, Socket.IO and MQTT	Understands OpenAPI descriptions Open source on GitHub
The browser version needs an extension or the desktop app to reach local services Team collaboration features are the paid part	The website focuses on the commercial docs and SDK platform rather than the client Most useful when an OpenAPI description exists
Web application, Downloadable app, Self-hosted, Browser extension	Web application
Open source	Open 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 September 23, 2026

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