Top 20 NuGet owin Packages

Native login throttling middleware for OpenIdConnect (IdentityServer)
A compatibility layer for sharing authentication tickets between Microsoft.Owin.Security and Microsoft.AspNetCore.Authentication.
Adds additional OAuth providers for OWIN to use with ASP.NET
Adds additional OAuth providers for OWIN to use with ASP.NET
Middleware that enables an application to use cookie based authentication, similar to ASP.NET's forms authentication.
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.
OWIN middleware for providing a resource/action based authorization manager.
Middleware that enables an application to use OpenIdConnect for authentication.
Microsoft.Owin 3.1 Authentication Middleware for JBoss Keycloak 3.2
Some owin middlewares to log api request/response/exception using nlog
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.
Workaround Middleware for Katana Bug #197
IT Hit WebDAV Server Context for projects that use IOwinContext.
Simple, lightweight, convention based web framework built on Web Api.
OWIN server that enables OWIN-based applications to run on IIS using the ASP.NET request pipeline.
Provides a set of helper types and abstractions for simplifying the creation of OWIN components.
Contains middlewares to support Google's OAuth 2.0 authentication workflow.
Middleware that enables an application to protect and validate JSON Web Tokens.
Middleware that enables an application to support the Microsoft Account authentication workflow.