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CFSSL vs step CLI: catalog facts
CFSSL	step CLI
Free Free and open source under BSD-2-Clause.	Free The step CLI is an open-source tool available under Apache License 2.0.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Includes both command-line utilities and an HTTP API server Supports certificate signing, verification and bundling	Creates, inspects, validates, and manages X.509 certificates Supports SSH certificates, JWTs, OAuth, and common cryptographic operations
Building from source requires Go 1.27 or later	Limitations not stated
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License: Apache-2.0
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 October 8, 2026	Official website Full listing and sources Checked October 5, 2026

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