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Hoppscotch vs Yaak: catalog facts
Hoppscotch	Yaak
Freemium Free and open source under the MIT licence, including self-hosting. A paid cloud plan…	Freemium Yaak is MIT licensed and free to build and use. Development is funded by…
Windows, macOS, Linux, Web, Self-hosted, Browser extension	Windows, macOS, Linux
Opens in a browser tab with nothing to install HTTP, GraphQL, WebSocket, Server-Sent Events, Socket.IO and MQTT	Requests are stored as files on your machine, so a git repository is the shared collection REST, GraphQL, gRPC, WebSocket and Server-Sent Events in one client
The browser version needs an extension or the desktop app to reach local services Team collaboration features are the paid part	A much younger project than Postman, with a smaller community No hosted collaboration features if that is what you actually want
Web application, Downloadable app, Self-hosted, Browser extension	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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