LemonLDAP::NG 1.0 main improvements:
* SAML, CAS, OpenID identity provider
* New Manager and Sessions explorer
* LDAP, SSL, CAS, DBI, Apache, SAML, Twitter, OpenID authentication
* 3 themes for Portal
* Form replay with virtual hosts support

And a lot a other features:
http://lemonldap-ng.org/start

Download it on http://lemonldap-ng.org/download

See all changes:
http://jira.ow2.org/secure/ReleaseNote.jspa?projectId=10030&version=10109