apache cookie SSO mechanism.
Implementation of XDG Base Directory specification for php
hook pam to authenticate users against anything
Apache LDAP Directory Manager
Facebook authentication strategy for Passport and Node.js.
JNDI DirContext source builder utility
Mature LDAP, LDIF and DSML client with i18n support.
PHP User Login and Management System based on Codeigniter
Two-factor authentication for Node.js
Access Management and Single Signon platform
A simple PHP library for LDAP authentication
Replicates POSIX user credentials over the Internet - NIS replacement
Plugin for OpenLDAP who checks password quality
NTLMv2 authentication library and filter for Java
Two-factor authentication system
The Identity Manager provides a solution to manage the user life cycle
Authentication, Access Control, and Single Sign-On
Username and password authentication strategy for Passport and Node.js