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Java LDAP

Open-source Java projects categorized as LDAP
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Top 9 Java LDAP Projects

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LDAP

  1. pac4j

    Security engine for Java (authentication, authorization, multi frameworks): OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT...

  2. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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  3. pwm

    pwm

  4. davmail

    DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at

    Project mention: DavMail Pop/IMAP/SMTP/Caldav/Carddav/LDAP Exchange Gateway | news.ycombinator.com | 2026-02-07

  5. OpenDJ - Open Identity Plattform Edition

    OpenDJ is an open-source LDAP directory server written in Java. It provides robust, scalable, and secure directory services for identity management, access control, and authentication in enterprise environments. OpenDJ supports LDAPv3 standard, replication, REST APIs, and high-performance

  6. play-pac4j

    Security library for Play framework 2/3 in Java and Scala: OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT...

  7. Apache Directory Server

    Apache Directory Server

  8. springboot-keycloak-openldap

    The goal of this project is to create a simple Spring Boot REST API, called simple-service, and secure it with Keycloak. Furthermore, the API users will be loaded into Keycloak from OpenLDAP server.

  9. Apache Directory Studio

    Apache Directory Studio

  10. g-suite-identity-sync

    G Suite to LDAP identity synchronizer

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Java LDAP discussion

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Java LDAP related posts

  • DavMail Pop/IMAP/SMTP/Caldav/Carddav/LDAP Exchange Gateway

    1 project | news.ycombinator.com | 7 Feb 2026

  • Show HN: Torii – a framework agnostic authentication library for Rust

    5 projects | news.ycombinator.com | 28 Feb 2025

  • Adding LDAP to your self-hosted SSO setup

    1 project | /r/selfhosted | 17 May 2023

  • OpenDJ Exporter

    2 projects | /r/PrometheusMonitoring | 6 Dec 2022

  • If you live in a two-party consent state and your employer refuses to be recorded or provide written documentation, can you get away with recording them secretly anyway, transcribing it, deleting the recording, and using the transcription as evidence in a legal case against your employer?

    1 project | /r/antiwork | 25 Nov 2022

  • AD question

    2 projects | /r/sysadmin | 21 Aug 2022

  • Free/Inexpensive option for Self Service AD Password Resets?

    1 project | /r/sysadmin | 15 Aug 2022
  • A note from our sponsor - SaaSHub
    www.saashub.com | 21 Jun 2026
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Index

What are some of the best open-source LDAP projects in Java? This list will help you:

# Project Stars
1 pac4j 2,521
2 pwm 974
3 davmail 733
4 OpenDJ - Open Identity Plattform Edition 433
5 play-pac4j 413
6 Apache Directory Server 183
7 springboot-keycloak-openldap 172
8 Apache Directory Studio 156
9 g-suite-identity-sync 128

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