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SecureCRT vs PuTTY-CAC: catalog facts
SecureCRT	PuTTY-CAC
Paid Commercial licence required after a free evaluation.	Free Free to download from the project's GitHub releases page.
Windows, macOS, Linux	Windows
Runs on Windows, macOS and Linux Regular-expression keyword highlighting	SSH login with smart cards, CAC cards and certificates FIDO key support, including YubiKeys and passkeys
Paid licence after the evaluation period Closed source	Windows only Interface keeps PuTTY's dated configuration dialogs
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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