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SSH3 vs Mosh: catalog facts
SSH3	Mosh
Free Free and open source under the Apache 2.0 licence.	Free Free software.
Windows, Linux, Command line	macOS, Linux, Command line
Runs remote shell sessions over HTTP/3 and QUIC Backed by a published paper and an IETF Internet-Draft	Sessions survive IP changes and sleep Local echo reduces perceived lag
Experimental research project, not a standard SSH replacement Last code change in September 2024	Server component must be installed on the remote host Needs UDP ports open through firewalls
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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