Server Software
- 389 Directory Server (formerly Fedora/Red Hat Directory Server)
- Active Directory from Microsoft
- Apache Directory Server
- Apple Open Directory
- CA Directory from CA Technologies
- FreeIPA
- IBM Tivoli Directory Server
- ldapjs an implementation of LDAP in JavaScript on Node.js.
- Mandriva Directory Server
- Nexor Directory
- Novell eDirectory
- OpenDJ - A fork of the OpenDS project
- OpenDS
- OpenLDAP
- Virtual Identity Server from Optimal IdM
- Oracle Internet Directory
- Radiant Logic VDS
- SLAPD - Standalone LDAP Daemon
- Sun Java System Directory Server
- UnboundID Directory Server
- Univention Corporate Server (with OpenLDAP from Univention)
- DirX Directory from Atos (ex-Siemens)
Read more about this topic: List Of LDAP Software