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cmux vs iTerm2: catalog facts
cmux	iTerm2
Free Free and open source under the GPL.	Free Free and open source under the GPL.
macOS, iOS, Command line	macOS
Notification rings show which agent needs attention Vertical tabs with git branch, ports and directory	Instant replay and shell integration make past output easy to recover Native tmux control mode turns tmux windows into real tabs
macOS only on the desktop Focused on agent workflows, which may be more than a plain terminal user needs	macOS only So many settings that first-time configuration is daunting
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License: GPL-2.0
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 September 22, 2026

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