Top LemonLDAP::NG Alternatives for Robust Web Single Sign-On
LemonLDAP::NG is a powerful, modular Web-SSO solution built on Apache::Session, designed to simplify the creation of protected web areas. It excels at managing both authentication and authorization, providing comprehensive AAA protection for your web space. However, specific project requirements, scalability needs, or integration preferences might lead you to explore other options. This guide delves into the best LemonLDAP::NG alternatives to help you find the perfect fit for your identity and access management strategy.
Top LemonLDAP::NG Alternatives
Looking for a different approach to web single sign-on or more specialized identity management features? These alternatives offer diverse functionalities, platforms, and open-source options to meet a variety of needs, providing robust solutions beyond LemonLDAP::NG.

shibboleth
Shibboleth is a standards-based, open-source software ideal for web single sign-on across or within organizational boundaries, enabling informed authorization decisions. As a free, open-source solution available on Windows, Linux, and self-hosted environments, it offers robust Federated and Single Sign-On features, making it a strong contender if you need a widely adopted, flexible standard.

10Duke Identity Provider
10Duke Identity Provider simplifies customer access and registration to multiple applications using a single username and password or preferred social logins. This commercial solution supports a wide array of platforms including Mac, Windows, Linux, Web, Android, iOS, and self-hosted environments. Its Multi-Factor Authentication (MFA), OAuth, and Single Sign-On features make it an excellent LemonLDAP::NG alternative for businesses seeking a comprehensive and commercially supported IDP.

Keycloak
Keycloak is an open-source Identity and Access Management solution designed for modern applications and services. Available as a free, open-source option for Linux and self-hosted deployments, it boasts powerful features like Federated identity, Multi-Factor Authentication (MFA), Single Sign-On, Access Control, and SAML Single Sign-On. Keycloak is a compelling LemonLDAP::NG alternative for developers and organizations prioritizing open-source flexibility and a rich feature set.

CAS
CAS (Central Authentication Service) provides an enterprise single sign-on service based on an open, well-documented protocol with an open-source Java server component and client libraries. As a free, open-source solution for Mac, Windows, Linux, Web, and self-hosted environments, its dedicated focus on Single Sign-On makes it a streamlined and effective LemonLDAP::NG alternative, particularly for Java-centric environments.

Persona
Persona (formerly BrowserID) allows users to sign in to sites using a chosen email address, eliminating the need to manage multiple usernames and passwords. This free, open-source web-based solution focuses on streamlined Login and Single Sign-On, offering a user-centric approach that distinguishes it from more traditional identity providers like LemonLDAP::NG.

SimpleSAMLphp
SimpleSAMLphp is an authentication application written in native PHP, primarily focused on providing SAML 2.0 support as a Service Provider and Identity Provider. As a free, open-source, self-hosted solution, its PHP-centric nature and robust Single Sign-On capabilities make it an excellent LemonLDAP::NG alternative for environments heavily invested in PHP.

OpenAM
OpenAM provides open-source authentication, authorization, entitlement, and federation software, continuing the development of OpenSSO. Available as a free solution for Windows, Linux, and BSD, it offers strong Access Control and Single Sign-On features. OpenAM is a viable LemonLDAP::NG alternative for those seeking a mature, community-driven open-source IAM platform.

Centrify
Centrify offers Unified Identity Services across data center, cloud, and mobile, providing a single login for users and a unified identity infrastructure for IT. This commercial solution for iPhone and iPad includes features like Email Server, POP3 Support, SMTP, and Web-Based management. While different in scope from LemonLDAP::NG, Centrify is an enterprise-grade alternative focusing on broader identity and access management for modern IT environments.

Ory
Ory positions itself as a developer-first Access Management solution. As a free, open-source, and self-hosted platform, it provides robust Developer Tools. While more focused on API-driven and microservices architectures, Ory serves as a modern, flexible LemonLDAP::NG alternative for developers building new applications that require granular access control and identity management.
The landscape of identity and access management is rich with diverse solutions, and the best LemonLDAP::NG alternative will ultimately depend on your specific organizational needs, technical stack, and security requirements. Whether you prioritize open-source flexibility, extensive feature sets, commercial support, or a developer-first approach, the options listed above provide compelling choices for securing your web applications and streamlining user access.