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websocat vs kulala.nvim: catalog facts
websocat	kulala.nvim
Free Free and open source.	Free Free and open source under the MIT licence.
Command line	Windows, macOS, Linux, Command line
Quick interactive testing of WebSocket endpoints Works in pipes and shell scripts	HTTP, GraphQL, gRPC and WebSocket in one plugin Compatible with the JetBrains .http file format
Command line only Advanced options take time to learn	Requires Neovim No standalone interface outside the editor
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 September 23, 2026

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