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cmux vs Calyx: catalog facts
cmux	Calyx
Free Free and open source under the GPL.	Free Free and open source under the MIT licence.
macOS, iOS, Command line	macOS
Notification rings show which agent needs attention Vertical tabs with git branch, ports and directory	Built on the Ghostty terminal core Designed for supervising several coding agents
macOS only on the desktop Focused on agent workflows, which may be more than a plain terminal user needs	macOS only No tagged GitHub releases
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License: MIT
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 1, 2026	Official website Full listing and sources Checked October 2, 2026

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