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CDN77 TLS Test vs sslscan: catalog facts
CDN77 TLS Test	sslscan
Free Free to use in the browser.	Free Free and open source under the GPL-3.0 license.
Web	Windows, Linux, Command line
Lists all enabled SSL and TLS versions Highlights deprecated protocols in red	Quick report of supported protocols and cipher suites Rewritten scanning backend in version 2
Page includes promotion for CDN77's CDN service Less detail than dedicated TLS audit tools	Command line only, with no graphical interface No packaged releases on the GitHub page
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Needs internet	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.