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SSLyze vs CDN77 TLS Test: catalog facts
SSLyze	CDN77 TLS Test
Free Free and open source.	Free Free to use in the browser.
Command line	Web
Fast TLS configuration scanning from the command line JSON output suited to automation	Lists all enabled SSL and TLS versions Highlights deprecated protocols in red
No graphical interface Output assumes some knowledge of TLS	Page includes promotion for CDN77's CDN service Less detail than dedicated TLS audit tools
Downloadable app	Web application
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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.