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SSH3 vs tsshd: catalog facts
SSH3	tsshd
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the MIT licence.
Windows, Linux, Command line	Windows, Linux, Command line
Runs remote shell sessions over HTTP/3 and QUIC Backed by a published paper and an IETF Internet-Draft	Sessions survive sleep, network loss and IP changes Keeps OpenSSH features mosh lacks, such as port and agent forwarding
Experimental research project, not a standard SSH replacement Last code change in September 2024	Needs the tssh client on the local machine and tsshd on the server No local echo or line editing, which mosh offers
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
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 October 2, 2026

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