LemonLDAP::NG is a modular Web SSO based on Apache::Session modules. It simplifies the building of a protected area with a few changes in the application. It manages both authentication and authorization and provides headers for accounting, so you can have full AAA protection for your Web space. LemonLDAP::NG is a complete rewrite of LemonLDAP. All components needed to use it and to administer it are included in the tarball. However, all modules developed for LemonLDAP may not work with LemonLDAP::NG.
privacyIDEA is a multi-factor authentication solution. It can manage any type of authentication device. All common OTP (one time password) devices are supported, including Google Authenticator, eToken Pass, OTP cards, Yubikey, SMSOTP, and mTAN/mobileTAN. New devices can be added easily. Users can be retrieved from flat files, LDAP, Active Directory, SQL databases, and SCIM services. It can also handle authorization and writes all events to a digitally signed audit log, giving you basic AAA functionality.