Get started with OpenID, OAuth today!


  • Compiled library that adds support for your site visitors to login with their OpenIDs by just dropping an ASP.NET control onto your page. It's that easy. An AJAX-style OpenID Selector control is also included for a slick, streamlined user experience.
  • Give your site members their own OpenIDs with the provider support included in this library.
  • Sample relying party and provider web sites show you just how to do it.
  • Easy access to all the functionality so you can customize how OpenID will operate on your site,whether you use ASP.NET or not.
  • Classic ASP support
  • Full support for custom extensions. Plus built-in support for Simple Registration, Attribute Exchange and PAPE.
  • Works in partial trusted shared hosting environments.
  • Support for web farms where state persistence, front-facing web servers and ASP.NET may not be standard or even available.
  • OpenID 2.0 and 1.x
  • OAuth 1.0, 1.0a and 2.0
  • Superior support for multi-byte Unicode identifiers.
  • Lots of security features
  • 490+ unit tests to verify correctness.
  • Library behind the OSIS OpenID interop testing