Compare software

Hoppscotch vs Altair GraphQL Client: catalog facts
Hoppscotch	Altair GraphQL Client
Freemium Free and open source under the MIT licence, including self-hosting. A paid cloud plan…	Freemium The client is free and open source; Altair GraphQL Cloud is an optional hosted service.
Windows, macOS, Linux, Web, Self-hosted, Browser extension	Windows, macOS, Linux, Web, Browser extension
Opens in a browser tab with nothing to install HTTP, GraphQL, WebSocket, Server-Sent Events, Socket.IO and MQTT	Schema docs search with one-click query generation Environments, pre-request scripts and file uploads
The browser version needs an extension or the desktop app to reach local services Team collaboration features are the paid part	Focused on GraphQL only, not general REST testing Team sync features rely on the separate cloud service
Web application, Downloadable app, Self-hosted, Browser extension	Downloadable app, Browser extension
Open source	Open source
License: MIT	License not stated
No account needed	No account 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.