1. Caml Crush.
https://github.com/ANSSI-FR/caml-crush/
2. CryptokiX.
http://secgroup.dais.unive.it/projects/security-apis/cryptokix/
3. GNOME Keyring.
http://live.gnome.org/GnomeKeyring
4. grsecurity.
http://grsecurity.net/
5. openCryptoki.
http://sourceforge.net/projects/opencryptoki/