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SSLyze vs sslscan: catalog facts
SSLyze	sslscan
Free Free and open source.	Free Free and open source under the GPL-3.0 license.
Command line	Windows, Linux, Command line
Fast TLS configuration scanning from the command line JSON output suited to automation	Quick report of supported protocols and cipher suites Rewritten scanning backend in version 2
No graphical interface Output assumes some knowledge of TLS	Command line only, with no graphical interface No packaged releases on the GitHub page
Downloadable app	Downloadable app
Open source	Open source
License not stated	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 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.