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Calyx vs cmux: catalog facts
Calyx	cmux
Free Free and open source under the MIT licence.	Free Free and open source under the GPL.
macOS	macOS, iOS, Command line
Built on the Ghostty terminal core Designed for supervising several coding agents	Notification rings show which agent needs attention Vertical tabs with git branch, ports and directory
macOS only No tagged GitHub releases	macOS only on the desktop Focused on agent workflows, which may be more than a plain terminal user needs
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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