Top 20 NuGet owin Packages

Enables Nancy integration with Microsoft.Owin.Security middleware.
Helper library for claims based identity & access control in OWIN/Katana based applications.
Owin middleware for zipkin4net
Web API self hosting for Single Page Application with Angular 2+. Middleware for OWIN pipeline. This application infrasrtucture for SPA on the Web API services.
OWIN AES data protector provider
NLog logging adapter for OWIN
An open architecture for interoperable OWIN middleware
Extensions for using Steeltoe Management OWIN Endpoints with Autofac
DryIoc extension for OWIN
Unified OAuth provider for Microsoft work, school, and personal accounts to be used with ASP.NET 4.5 OWIN
Google Recaptcha middleware for OpenIdConnect (IdentityServer)
Configure Owin Framework middleware using Urchin
Owin middleware to document other Owin middleware
Owin middleware to serve static files
Mocks of Owin Framework interfaces to use in your unit tests
DryIoc extension for OWIN
Middleware that enables an application to use cookie based authentication, similar to ASP.NET's forms authentication.
Middleware that enables an application to protect and validate JSON Web Tokens.
Middleware that enables an application to use Microsoft's technology for authentication.
Middleware that enables an application to support any standard OAuth 2.0 authentication workflow.