Top 20 NuGet oauth Packages
                Portable Client Library and HttpClient based OAuth library, including all platform(for PCL as .NET 4.0, .NET 4.5, Silverlight4, Silverlight5, Windows Phone 8.0, Windows Store Apps). This is an independently uploaded package and has source code from various sources aggregated under MIT License. 
Ori...
            
            
            
        
                A lightweight library for OAuth2 authentication.
Built inn support only for Facebook yet, but available functionality to add custom providers.
            
            
            
        
                A library containing OAuth server providers and utilities for OWIN using JWT.
            
            
            
        
                Sina open authentication provider for asp.net
            
            
            
        
                Tencent open authentication provider for asp.net
            
            
            
        
                Configuration section for external providers such as Facebook, Google
            
            
            
        
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                仅支持4.0及以上
            
            
            
        
                Adds custom configuration section for OAuth providers for OWIN to use with ASP.NET
            
            
            
        
                Lazy authentication OAuth2 requires some data from your favorite datasource. This binary can be added to your data source ensuring that you dont need to add any Microsoft.Owin.Security.OAuth packages to your data access layer.
            
            
            
        
                support OWIN
            
            
            
        
                Request will be authorized when the Authorization Header will have a matching token in the configured list in the web.config
            
            
            
        
                Bearer Authentication for website users.
            
            
            
        
                Bearer Authentication Base Types.
            
            
            
        
                Bearer Authentication for external OAuth services.
            
            
            
        
                Nequeo OAuth component
            
            
            
        
                NRII open authentication provider for asp.net
            
            
            
         
                 
                     
                