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SSH3Dropbear
Free

Free and open source under the Apache 2.0 licence.

 Free

Free and open source under an MIT-style license.

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
  • Very small memory and disk footprint
  • Compatible with OpenSSH authorized_keys
  • Experimental research project, not a standard SSH replacement
  • Last code change in September 2024
  • Distributed mainly as source code to compile yourself
  • Fewer features than OpenSSH
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 Works offline

Checked October 2, 2026

Checked October 1, 2026

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