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GNU Screen vs Zellij: catalog facts
GNU Screen	Zellij
Free Free and open source GNU software.	Free Free and open source under the MIT licence.
macOS, Linux, Command line	Windows, macOS, Linux, Command line
Detach and reattach sessions so remote processes keep running Several shell sessions inside one terminal window	On-screen key hints, so it is usable without memorising anything first Floating and stacked panes that tmux does not have
Keyboard-driven interface takes time to learn No Windows version listed	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 not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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