| Product | Vendor | Software license[a] | Initial Release | Last Release | Last Version | Comments |
|---|
| 389 Directory Server | Red Hat | GPL linking exception[1] with exception to allow linking to non-GPL[2] | 2005, Dec, | 2024, May 15 | 3.1.0 | Formerly Fedora Directory Server |
| Microsoft_Entra_ID | Microsoft | Proprietary | 2008, Oct 27 | 2025 | ? | Known as Azure Active Directory (AAD) as well |
| Jumpcloud | Jumpcloud | Proprietary | 2013, Sept | 2024, Dec 9 | ? | |
| Red Hat Identity Manager (IdM) | Red Hat | Proprietary | 2008, Apr 1 | 2024 | 4.12 | Fork ofFreeIPA. Based on (RHEL 9.10 |
| Active Directory | Microsoft | Proprietary | 2000 | 2024, Nov 1 | 91 (WS 2025) | Integrated on Windows Server |
| Authorized Entities Directory (Æ-DIR) | Michael Ströder | Apache 2.0 | | | | Based onOpenLDAP with additional tools |
| Apache Directory Server | Apache Software Foundation | Apache 2.0 | 2006, Oct | 2023, Oct 23 | 2.0.0-AM27 | |
| Apple Open Directory - | Apple Inc. | Proprietary[3] | | | | A fork of the OpenLDAP project |
| BEJY LDAP Server,[4] | Stefan "Bebbo" Franke | GPL | | | | AJava LDAP Server. |
| CA Directory | CA Technologies | Proprietary | | 2024, Dec 2nd | 14.1 | CA Tech was acquired by Broadcom Inc in 2018 |
| Critical Path Directory Server | Critical Path | Proprietary | | | | Now owned by Synchronoss Technologies. |
| Directory services - | ForgeRock | Proprietary | | | | A fork of theOpenDJ project |
| DirX Directory | Atos (ex-Siemens)[citation needed] | | | | |
| FreeIPA | GNU | GPL | 2008, Apr 1 | 2024, June 10 | 4.12.1 | Using389 Directory Server |
| IBM Tivoli Directory Server | IBM | Proprietary | | 2024, Oct 7 | 7.5 |
| LDAPJS.[5] | Mark Cavage[6] | MIT | 2009, May 27th | 2025 | 23.6.1 | Implementation of LDAP inJavaScript onNode.js |
| Mandriva Directory Server | Mandriva development team | GPL | 2011 | 2021, Nov 23 | | Now part ofMandriva Management Console |
| Meerkat DSA | Wildboar Software | MIT | | | | Also supports the full X.500 directory protocols:DAP, DSP, and DOP |
| Nexor Directory | [citation needed] | [citation needed] | | | | |
| NetIQ eDirectory | NetIQ | Proprietary | 1993 | 2023, May 31 | 9.2.8 | Successor. Originally known as Novell Directory Services (NDS). Successr of eDirectory and NDS. |
| OpenBSD ldapd[7] | Martin Hedenfalk,OpenBSD | ISC | | | |
| OpenDJ | Open Identity Platform Community | CDDL | 2010, Dec 21 | 2024, May 7 | 4.6.3 | A fork of theOpenDS project developed byForgeRock, until 2016,[8] now maintained by OpenDJ Community |
| OpenDS | Sun Microsystems | CDDL | | 2024, May 7 | 4.6.3 | CDDL-licensed product no longer maintained, now Oracle Unified Directory. |
| OpenLDAP | Kurt Zeilenga and others (based on Slapd) | OpenLDAP Public License | 1998, Aug 26 | 2024, Nov 26 | 2.6.9 | LDAP clone from University of Michigan |
| Oracle Directory Server Enterprise Edition[9] | Oracle, based onSun DSEE | Proprietary | | | | 11g |
| Oracle Internet Directory | Oracle | Proprietary | | 2023, Jan | 12.2.1.4 | |
| Oracle Unified Directory (OUD) | Oracle, based onOpenDS | Proprietary | | 2024, Apr | 12.2.1.4 | Based on OpenDJ |
| PingDirectory | Ping Identity | Proprietary | 2002 | 2024, Dec | 10.2.0.0 | Based on OpenDS. Formerly UnboundID Directory Server[10]). Was purchased by Ping Identity in 2016[11] |
| RadiantOne | Radiant Logic[citation needed] | | | | |
| Red Hat Directory Server | Red Hat | GPL plus exception | | 2024, May 15 | 3.1.0 | Commercial version of 389 Directory Server |
| ReOpenLDAP[12] | Peter-Service R&D | AGPL and OpenLDAP Public License | | | | Fork of OpenLDAP with improved stability for highload and multi-master clustering |
| Samba4 | Samba Team | GPLv3 | 1992, Jan | 2025, Jan 6 | 4.21.3 | Active Directory compatible Domain Controller |
| Slapd | University of Michigan | Free[citation needed] | 1993 | 1996 | | Standalone LDAP Daemon. Superseded by OpenLDAP[13] |
| Sun Java System Directory Server | Sun Microsystems | [citation needed] | 2011 | 2011 | | No longer maintained |
| Wren:DS[14] | Wren Security[15] | CDDL | | | | A community driven open-source fork ofOpenDJ project. |