Compare software

SSLyze vs ImmuniWeb SSL Security Test: catalog facts
SSLyze	ImmuniWeb SSL Security Test
Free Free and open source.	Free The test is free; ImmuniWeb also sells commercial security services.
Command line	Web
Fast TLS configuration scanning from the command line JSON output suited to automation	Tests email servers as well as web servers Compliance checks for PCI DSS, HIPAA and NIST
No graphical interface Output assumes some knowledge of TLS	Provided as is without warranty Only tests servers reachable from the internet
Downloadable app	Web application
Open source	Closed source
License not stated	License not stated
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.