# Single sign-on (SSO)

OpenPaaS supports single sign-on by external modules. Below is the list of SSO services
supported by OpenPaaS

- [LemonLDAP](https://lemonldap-ng.org/): provided by [linagora.esn.lemonldap](https://ci.linagora.com/linagora/lgs/openpaas/linagora.esn.lemonldap)