A single assembly that adds OpenID 1.1/2.0, OAuth 1.0(a)/2.0, & InfoCard authentication and authorization functionality for client and server applications.
This allows your (web) application to issue identities or accept issued identites from other web applications, and even access your users' data on other services.

Install-Package DotNetOpenAuth.Ultimate -Version
dotnet add package DotNetOpenAuth.Ultimate --version
<PackageReference Include="DotNetOpenAuth.Ultimate" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add DotNetOpenAuth.Ultimate --version
The NuGet Team does not provide support for this client. Please contact its maintainers for support.


This package has no dependencies.

Showing the top 4 GitHub repositories that depend on DotNetOpenAuth.Ultimate:

Repository Stars
Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
A cross-platform desktop app, written in Mono that would download (all or selected) photos from your photostream in their selected size along with their description, title and tags.
A web based license manager for Portable.Licensing developed using AngularJS and ServiceStack. Portable.Licensing is a cross platform software licensing framework which allows you to implement licensing into your application or library. It provides you all tools to create and validate licenses for your software.

Read more about the GitHub Usage information on our documentation.

Version History

Version Downloads Last updated 311,845 11/25/2013 3,739 10/23/2013 589 10/20/2013 90,570 6/28/2013 4,278 4/27/2013 7,618 2/24/2013 2,458 1/27/2013 728 1/25/2013 6,305 11/28/2012 1,949 10/30/2012 2,430 9/30/2012 14,689 6/30/2012 898 7/1/2012 679 6/28/2012 3,066 4/29/2012 1,428 4/6/2012 1,228 3/25/2012
4.0.0-RC1 586 3/20/2012