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Dropbear vs trzsz-ssh: catalog facts
Dropbear	trzsz-ssh
Free Free and open source under an MIT-style license.	Free Free and open source.
macOS, Linux, Command line	macOS, Linux, Command line
Very small memory and disk footprint Compatible with OpenSSH authorized_keys	Aims for full OpenSSH compatibility Interactive server selection and batch login
Distributed mainly as source code to compile yourself Fewer features than OpenSSH	Remembering passwords is less secure than key-based login Much of the community discussion is in Chinese
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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