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3mux vs Zellij: catalog facts
3mux	Zellij
Free Free and open source under the MIT license.	Free Free and open source under the MIT licence.
Command line	Windows, macOS, Linux, Command line
i3-like keybindings and mouse controls Search and scrollback included	On-screen key hints, so it is usable without memorising anything first Floating and stacked panes that tmux does not have
Requires a terminal	Fewer years of accumulated configuration and scripts than tmux The status bar uses screen space until you turn it off
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 21, 2026

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