An easy to use password change tool for Windows multiple domains.
DBIS Reference Implementation
gnupasswd - gnu change user password
Plugin for OpenLDAP who checks password quality
Project moved to github: https://github.com/pam-pgsql/pam-pgsql
Two-factor authentication system
Authentication, Access Control, and Single Sign-On
Open Source Web Single Sign-On
Successor to PuTTY with advanced features similar to iterm2
Remotely re-join computer to domain
pGina is an open source replacement authentication system for Windows