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Eternal Terminal vs Mosh: catalog facts
Eternal Terminal	Mosh
Free Free and open source.	Free Free software.
Command line	macOS, Linux, Command line
Sessions survive network outages and IP changes Supports native scrolling and tmux control mode	Sessions survive IP changes and sleep Local echo reduces perceived lag
Must be installed on both the client and the server Release notes on the site are old, so check the repository for current versions	Server component must be installed on the remote host Needs UDP ports open through firewalls
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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