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websocat vs wscat: catalog facts
websocat	wscat
Free Free and open source.	Free Free and open source.
Command line	Command line
Quick interactive testing of WebSocket endpoints Works in pipes and shell scripts	Interactive WebSocket sessions in the terminal Can act as a client or a listening server
Command line only Advanced options take time to learn	Requires Node.js and npm Plain text interface with no message history tools
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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 October 1, 2026

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