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PuTTY-CAC vs Bitvise SSH Client: catalog facts
PuTTY-CAC	Bitvise SSH Client
Free Free to download from the project's GitHub releases page.	Free Free to download and use.
Windows	Windows
SSH login with smart cards, CAC cards and certificates FIDO key support, including YubiKeys and passkeys	Terminal and graphical SFTP in one app Flexible port forwarding and tunnelling
Windows only Interface keeps PuTTY's dated configuration dialogs	Windows only Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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