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SSLyze vs testssl.sh: catalog facts
SSLyze	testssl.sh
Free Free and open source.	Free Free and open source.
Command line	macOS, Linux, Command line
Fast TLS configuration scanning from the command line JSON output suited to automation	Tests any port, not only HTTPS on 443 Checks protocols, ciphers and known cryptographic flaws
No graphical interface Output assumes some knowledge of TLS	Command-line output takes some TLS knowledge to interpret Intended for authorized testing of servers you run or may test
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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