pac4j - The security engine to protect all your Java web applications

pac4j is a Java security engine to authenticate users, get their profiles and manage their authorizations in order to secure Java web applications. It supports most authentication mechanisms: OAuth (Facebook, Twitter, Google, Yahoo...), CAS, HTTP (form, basic auth...), OpenID, SAML, Google App Engine, OpenID Connect, JWT, LDAP, RDBMS, MongoDB and Stormpath and authorization checks.