Compare software

OpenSSH vs SSH3: catalog facts
OpenSSH	SSH3
Free Free and open source under a BSD-style licence.	Free Free and open source under the Apache 2.0 licence.
macOS, Linux, Self-hosted, Command line	Windows, Linux, Command line
Complete client, server and key management suite Port forwarding and tunnelling built in	Runs remote shell sessions over HTTP/3 and QUIC Backed by a published paper and an IETF Internet-Draft
Command-line only with no graphical interface Configuration options take time to learn	Experimental research project, not a standard SSH replacement Last code change in September 2024
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: BSD-style	License: Apache-2.0
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 October 2, 2026

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