Currently there is no PKCS#11 support.
It would be very useful for KeyStore Explorer to be able to use PKCS11 keystores on SmartCards. At least for signing, not necessarily all SmartCard management features.
For the reference, Java jarsigner can use certificate on SmartCards via PKCS11 by providing these additional command line parameters:
(linebreaks added here for readability, file smartcard.cfg contains location of DLL of my smart card driver)
Issue based on discussion at http://sourceforge.net/p/keystore-explorer/discussion/general/thread/a64bfa94/