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Yaak vs Firecamp: catalog facts
Yaak	Firecamp
Freemium Yaak is MIT licensed and free to build and use. Development is funded by…	Free Free to use as a guest; an account unlocks saved collections and team features.
Windows, macOS, Linux	Web
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	Handles REST, GraphQL, WebSocket and Socket.IO in one tool Guest mode lets you send requests without signing up
A much younger project than Postman, with a smaller community No hosted collaboration features if that is what you actually want	Saving requests and collections requires an account Team collaboration depends on the hosted service
Downloadable app	Web application
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 24, 2026

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