A spec compliant, secure by default
FIDO® Certified StrongKey FIDO Server (SKFS)
JWT authentication for your Symfony API
One Time Password Authentication package, compatible with Google Auth
PHP strong authentication library, web interface & CLI, OATH certified
apache cookie SSO mechanism.
Two-factor authentication system
SSH Key Management solution
Deprecated project - see http://wordpress.org/extend/plugins/wpmuldap/