SimpleSAMLphp is a simple application written in native PHP that deals with authentication. SimpleSAMLphp supports several federation protocols, authentication mechanisms and can be used both for local authentication, as a service provider or as an identity provider. simpleSAMLphp can even be used to bridge other federation protocols, in example allowing you to setup a Shibboleth 1.3 Service Provider in a SAML 2.0 Federation (or the other way around).

Open source libraries in Java and C++ providing core message, binding, and profile classes for implementing applications based on SAML 1.0, 1.1, and 2.0. Extensive design integration with the native Java and C++ programming models is provided. OpenSAML is a low-level toolkit that does not by itself implement full SAML profiles such as single sign-on, but can be used to simplify the implementation of such profiles. Provided under the standard Apache 2.0 license for use in any commercial or non-commercial code.

A flexible and comprehensive open source, cross-domain, attribute-based web single-sign on system based on SAML 1.x and 2.0. Built on the OpenSAML libraries, a Java-based identity provider and native (C++) service provider are provided. The identity provider supports pluggability of both authentication and attribute sources and supports most of the core SAML SSO profiles and bindings. The service provider supports most popular web servers and enables seamless and loosely coupled integration of authentication and attribute data with applications without programming to product-specific APIs.

The goal of OpenSSO is to provide an extensible implementation of an identity services infrastructure that will facilitate single sign-on for web applications hosted on web servers and application servers. Delivered as a self-contained J2EE application, OpenSSO provides access management, federation, and web services security functionality in a simple WAR file that

PingFederate is a standalone federated identity server utilizing SAML 1.0, 1.1 and 2.0 to enable secure single sign-on to Internet applications for employees, customers and business partners.

RSA Federated Identity Manager is a flexible, scalable, and widely deployed solution for identity federation. With RSA Federated Identity Manager, enterprises can share trusted user credentials securely and confidently.  This enables convenient access to multiple external applications or web services using a single identity and logon.  Whether collaborating with business partners, outsourced service providers, supply chain partners, or across multiple offices or agencies; federation provides a standard-based way to leverage trusted identities between organizations.

Sun Federated Access Manager (formerly Sun Access Manager and Sun Federation Manager) is the first identity and access management solution to extend security for Web and Java applications to federated environments and Web services security -- with a single product. The product, which is built from the open source project called OpenSSO, provides access management, federation, and web services security functionality in a simple WAR file. Unlike other federation/WAM solutions, which often require the deployment of multiple

Symlabs Federated Identity Suite delivers the flexibility to create an identity management solution with Single Sign-On and Single Log-Out for nearly any environment. It is fully compliant with SAML (1.0, 1.1, & 2.0 including GSA profile) plus open Liberty Alliance standards (ID-WSF 2.0 & ID-FF 1.2), and also provides support for WS-Federation 1.0.

ZXID.org Identity Management toolkit implements standalone SAML 2.0 and Liberty ID-WSF 2.0 stacks. It is a C implementation with minimal external dependencies - OpenSSL, CURL, and zlib - ensuring easy deployment (no DLLhell). Due to its small footprint and efficient and accurate schema driven implementation, it is suitable for embedded and high volume applications. Language bindings to all popular highlevel languages such as PHP, Perl, and Java, are provided via SWIG. ZXID implements, as of July 07, SP, WSC, and WSP roles.