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Leon vs Braina: catalog facts
Leon	Braina
Free Free and open source under the MIT licence.	Freemium A free download is available; check the site for paid editions.
Self-hosted	Windows, macOS
Runs on your own server under your control Extendable with modular skills	Voice control of the computer in many languages Dictation in over 100 languages
Requires setting up and maintaining a server Aimed at people comfortable with Node.js and Python	Closed source Marketing on the site is broad, so capabilities are best tested directly
Self-hosted	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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