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ssllabs-scan vs sslscan: catalog facts
ssllabs-scan	sslscan
Free The command-line client is open source under Apache-2.0; SSL Labs API use is free with…	Free Free and open source under the GPL-3.0 license.
Command line	Windows, Linux, Command line
Supports scheduled and bulk server assessments Uses the SSL Labs reference API client	Quick report of supported protocols and cipher suites Rewritten scanning backend in version 2
Requires access to the SSL Labs API API use is subject to restrictions	Command line only, with no graphical interface No packaged releases on the GitHub page
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
Account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.