Revenant - PDF Signer

Cross-platform client for signing PDF documents via ARX CoSign / DocuSign Signature Appliance. Works without the Windows-only CoSign desktop client.

Sign PDFs with embedded or detached digital signatures, verify existing signatures, and check certificate trust chains -- all from a native app with a graphical interface.

— Sign with customizable visual signature appearance
— Verify signatures and certificate trust against national Trust Service Lists
— Available in English, Russian, and Armenian
— Secure credential storage via system keychain
— Works with any CoSign / DSA server

Originally built for the Armenian Government EKENG CoSign appliance.

Not affiliated with, endorsed by, or supported by EKENG, ARX, or DocuSign.