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GF.dev TLS Cipher Suite Scanner vs sslscan: catalog facts
GF.dev TLS Cipher Suite Scanner	sslscan
Free Free to use in the browser.	Free Free and open source under the GPL-3.0 license.
Web	Windows, Linux, Command line
Quick check of the negotiated TLS version and cipher suite Nothing to install	Quick report of supported protocols and cipher suites Rewritten scanning backend in version 2
Reports the negotiated suite rather than a full list of supported ciphers Only checks servers reachable from the internet	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.