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OpenSSL vs CFSSL: catalog facts
OpenSSL	CFSSL
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under BSD-2-Clause.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Includes command-line utilities and TLS libraries.	Includes both command-line utilities and an HTTP API server Supports certificate signing, verification and bundling
Secure use depends on correct configuration and key handling.	Building from source requires Go 1.27 or later
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: BSD-2-Clause
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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