C# OpenID

This C# OpenID library adds OpenID 2.0 Provider and Relying Party support to your web site both programmatically and through convenient drop-in ASP.NET controls.

Features

• Add 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 login 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. New CTP showing off 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 support.
• Superior support for multi-byte Unicode identifiers.
• Lots of Security features
• 250+ unit tests to verify correctness.