SSLyze vs testssl.sh

SSLyze vs testssl.sh
Fact	SSLyze	testssl.sh
Language	Python	Shell
Licence	AGPL-3.0	GPL-2.0
Stars	3.8k	9.2k
Latest	6.3.1	v3.2.4
Last push	2026-10-18	2026-10-18
Release cadence	about 180 days between releases	about 148 days between releases
Active contributors	0 commit authors on the default branch in the last 90 days	3 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

SSLyze replaces testssl.sh. Alternatives to testssl.sh →
Full replacementCommand-line TLS scanner that checks protocols, ciphers and known vulnerabilities.
testssl.sh replaces SSLyze. Alternatives to SSLyze →
Full replacementCommand-line TLS scanner that checks protocols, ciphers and known vulnerabilities.
Both replace Qualys SSL Labs. Alternatives to Qualys SSL Labs →
PartialSSLyzeScans a server's TLS setup from your own machine, with no letter grade.
Partialtestssl.shChecks a server's TLS setup from your own machine, including internal hosts, with no letter grade.

6.3.12026-03-29Update cryptography package support to >=43,<47 (#715).
6.3.02025-12-30Added support for Python 3.14 and removed support for Python 3.9
6.2.02025-08-03Added support for specifying a custom TLS configuration/profile to check the server against; see --custom_tls_config an…
6.1.02025-01-04Added support for Python 3.13 and removed support for Python 3.8
6.0.02024-03-31Added support for Python 3.12 (#630).

unsigned The latest release, 6.3.1, carries no signature GitHub could verify.

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✓ signed The latest release, v3.2.4, carries a signature GitHub verified.

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