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websocat vs Firecamp: catalog facts
websocat	Firecamp
Free Free and open source.	Free Free to use as a guest; an account unlocks saved collections and team features.
Command line	Web
Quick interactive testing of WebSocket endpoints Works in pipes and shell scripts	Handles REST, GraphQL, WebSocket and Socket.IO in one tool Guest mode lets you send requests without signing up
Command line only Advanced options take time to learn	Saving requests and collections requires an account Team collaboration depends on the hosted service
Downloadable app	Web application
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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