Open Source Authentication Software

A java LDAP client with LDIF support, security (inc SSL, SASL & GSSAPI), translated into many languages (inc. Chinese), online help, user forms and many other features. The commercial version is available at https://jxworkbench.com for $9.95. It extends JXplorer to include: - custom LDAP reporting - to pdf, word etc. - Find and Replace with regexp and attribute substitution - A secure password vault to store directory connections - etc. Support for JXplorer and JXWorkbench is available at http://jxplorer.org. Commercial support available from sales@jxworkbench.com

EJBCA is an enterprise class PKI Certificate Authority built on JEE technology. It is a robust, high performance, platform independent, flexible, and component based CA to be used standalone or integrated in other JEE applications.

Pocket-ID is an open-source OpenID Connect (OIDC) identity provider that prioritizes passwordless authentication using modern passkeys, making secure login easier for self-hosted services. By supporting passkeys instead of traditional passwords, Pocket-ID aligns with evolving web authentication standards, letting users sign in with devices, hardware keys like YubiKey, or platform-managed credentials. It’s designed to be simpler to install and use than larger identity solutions like Keycloak or Hydra and integrates smoothly with other self-hosted applications that understand OIDC protocols. With Docker-ready setup and broad community interest, the project supports a fully self-managed authentication stack where you control user identity, sessions, and login flows without relying on third-party services. It has gained popularity in the self-hosted ecosystem as a straightforward way to add single sign-on capabilities and modern security to your apps.

Logto is an open-source authentication and authorization platform built for SaaS, AI products, and modern developer teams. It helps teams add secure sign-in, sign-up, user management, organization support, and access control without building identity infrastructure from scratch. The project is based on standards such as OIDC, OAuth 2.1, and SAML, making it suitable for web apps, mobile apps, APIs, machine-to-machine access, and enterprise integrations. It supports multi-tenancy, role-based access control, enterprise SSO, MFA, social login, and customizable authentication experiences. Developers can integrate it through SDKs for many popular frameworks and languages. Logto is especially useful for teams that need production-grade identity features while keeping control over branding, architecture, and deployment options.

2FAS Auth Browser Extension is a cross-browser plugin that integrates the 2FAS multi-factor authentication platform directly into the user’s web browsing workflow, helping streamline login flows by interfacing with web pages and 2FA token generation in a seamless way. Once installed in browsers like Chrome, Firefox, or others that support standard extension APIs, it can detect 2FA prompts on login forms and offer to fill or suggest one-time passwords generated by your 2FAS mobile clients or local vault, reducing friction and manual copy-paste steps. The extension communicates securely with companion mobile or desktop clients to fetch or synchronize token data, respecting encryption and privacy boundaries so that secrets are never exposed to the extension itself without user consent. It also lets users manage or view registered accounts, add new ones by scanning QR codes via companion apps, and handle token organization from within browser UI elements.

LDAP Account Manager (LAM) is a webfrontend for managing accounts stored in an LDAP directory. You can use templates for account creation and use multiple configuration profiles. Account information can be exported as PDF file.

AutoIndex is a PHP script that makes a table that lists the files in a directory, and lets users access the files and subdirectories. It includes searching, icons for each file type, an admin panel, uploads, access logging, file descriptions, and more.

VoidAuth is a self-hosted, open-source Single Sign-On (SSO) authentication provider that simplifies managing user access and identity for a suite of private applications. Built around standards like OpenID Connect (OIDC), it serves as a central authentication authority so that users can log in once and gain secure access to multiple services without duplicating credentials. The platform offers a user and group management interface where administrators can invite users, enable self-registration, and configure policies like multi-factor authentication and password resets with email verification. Designed with flexibility in mind, VoidAuth supports features such as passkeys and customizable branding, making it adaptable to a wide range of deployment environments and aesthetic preferences.

LDAP Explorer is a multi platform, graphical LDAP tool that enables you to browse, modify and manage LDAP servers.

TodoApp is a reference todo application demonstrating a modern full-stack web architecture. Its front end uses a browser-based WebAssembly application, while the backend exposes REST endpoints through Minimal APIs. An object-relational mapper and SQLite provide persistent data storage, with built-in orchestration tooling coordinating application services and dependencies. Authentication examples include identity management, cookies, bearer tokens, and optional social sign-in providers. A reverse proxy forwards requests between the front-end server and API, while rate limiting and OpenAPI demonstrate additional production-oriented capabilities. Integration tests exercise the REST API, and the backend can also run independently for direct API use. Observability tooling collects logs, metrics, and traces that can be inspected through an integrated dashboard.

A fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication.

The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers

A class for PHP to talk to Active Directory through LDAP.

Led is a general purpose LDAP editor which allows editing of LDIF records or standard unix flat file representations of LDAP databases using your favorite editor.

phpLDAPadmin is a web-based LDAP administration tool for managing your LDAP server. With it you can browse your LDAP tree, view LDAP schema, perform searches, create, delete, copy and edit LDAP entries. You can even copy entries between servers.

Atricore’s JOSSO is an open source and commercially supported Internet Single Sign-On (FSSO) solution for point-and-click and standards-based (SAML2) Internet-scale SSO implementations. For more information contact us at : http://www.josso.org

Opens up IIS Proxy Servers using NTLM to non-Microsoft browsers, etc

SecurityFilter is a Java Servlet Filter that mimics the behavior and configuration format of container managed security, with several development and deployment advantages. See the Home Page for more details.

PAM module which permits authentication for arbitrary services via ssh-agent. Written with sudo in mind, but like any auth PAM module, can be used for for many purposes.

Kasai is a 100% Java based authentication and authorization framework. It allows you to integrate into your application a granular, complete and manageable permission scheme.

This project is used to host the mailing list and downloads of the Open Source Unity system - versatile identity management solution.

This small perl program allows you to easily export LDAP entries from an LDAP server (MS ActiveDirectory for example) to csv format. It can export various csv formats and can deal with mutlivalued attributes.

SimpleID is a simple, personal OpenID provider written in PHP.

The project aims at developing J2EE Connector Architecture 1.0 Compilant Resource Adapters for integrating various EIS's like XML files, XML DB, LDAP, FTP, SMTP, POP3, Point Of Sale, Properties File, Office Documents

Event Manager for OpenLDAP is an internal LDAP event handler that can execute operations to automate tasks. It can be used as base for remote automation, Identity Management, and so on.