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Ultimate SAML Component for .NET, ASP.NET and MVC

An elegant way to add support for Single Sign-On SAML 1.x and 2.0 to your applications

UltimateSAML is an OASIS SAML v1.x and v2.0 specifications compliant .NET toolkit. It offers an elegant and easy way to add support for Single Sign-On and Single-Logout SAML to your ASP.NET, ASP.NET MVC, Desktop, and Service applications. Ultimate SAML has helped many customers bring interoperability with Salesforce, Office 365, Google Apps, Shibboleth, and ADFS to their systems.

The solution for your SSO applications

  • Used and trusted by thousands of our customers around the world.
  • Lightweight library (only one assembly).
  • Fully tested against Salesforce, Google Apps, Office 365, ADFS and Shibboleth for interoperability.

SAML 1.x: Assertions, Protocol, Bindings, and Profiles

  • Easily create, modify, sign, verify, and serialize SAML assertions
  • Easily create, modify, sign, verify, and serialize SAML protocol messages
  • Fully supports SAML 1.x Identity Provider - Service Provider web application model

SAML 2.0: Assertions, Protocol, Bindings, Metadata, and Profiles

  • Easily create, modify, encrypt, decrypt, sign, verify, and serialize SAML assertions
  • Easily create, modify, sign, verify, and serialize SAML protocol messages
  • Fully supports SAML 2.0 Bindings: HTTP POST, HTTP Artifact, HTTP Redirect, PAOS, SOAP, and SAML URI
  • Fully supports Identity Provider and Service Provider initiated
  • Fully supports Single Logout

Security Support

  • Supports SHA-1 and SHA-256 on generatting and verifying SAML XML signatures


  • Royalty free run-time.
  • 1 year minor and major product updates.
  • Supports Visual Studio 2005 (.NET 2.0) to Visual Studio 2015 (.NET 4.6.x), Delphi 8, C# Builder and other compliant development environments.
  • Uniform and comprehensive error handling with .NET exceptions.
  • UltimateSaml can run under .NET Framework 2.x, 3.x, and 4.x.
  • UltimateSaml can be used from ASP.NET web pages, ASP.NET MVC, Windows Forms, and Web Services.

.NET Technology

  • 100% managed code written in C# (Complete source code included in the Premium License).
  • CLS compliant (Common Language Specification).
  • Object-oriented design created specifically for .NET Framework version 2.x and above.
  • Does not use unsafe blocks for minimal permission requirements.
  • Seamless integration with the .NET base class libraries.
  • Documentation fully integrated into Visual Studio .NET.
  • C# and VB.NET samples included in the setup package show how to work with UltimateSaml.


It was a really good idea for me to switch from the previous suite to your Ultimate Studio few months ago. It has a modern design and the classes saved me a lot of time. Thank you very much...
Robert Osorio - Senior Developer JPMorgan Chase
The Ultimate SAML is solid, very easy to use. I have used some other library and I can assure anyone buying that this is the best SAML library for .NET around. Their response time is impressive.
Todd Joseph - Software Developer HealthcareSource