Free and open-source PDF signing and verification application.
Managed .NET wrapper for unmanaged PKCS#11 libraries
GUI tool for administration of PKCS#11 enabled devices
Easy to use PKI library
PKI & Card Management System to issue and manage tokens & certificates
PKCS#11 logging proxy module
OpenPGP is a smart card/java card standard for signing and encrypting.
Lite Security Module: a daemon to handle PKCS11 Secure Boxes