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wscatBruno
Free

Free and open source.

 Freemium

Most features are free and open source under the MIT licence. Paid editions add features…

Command line Windows, macOS, Linux
  • Interactive WebSocket sessions in the terminal
  • Can act as a client or a listening server
  • Collections are plain files, so Git does the versioning and sharing
  • Offline only, with the project committing to never adding cloud sync
  • Requires Node.js and npm
  • Plain text interface with no message history tools
  • Some team features are paid
  • The Bru markup is a format specific to Bruno
Downloadable app Downloadable app
Open source Open source
License: MIT License: MIT
No account needed No account needed
Not stated if it works offline Works offline

Checked October 1, 2026

Checked September 21, 2026

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