Top 20 NuGet owin Packages

Access token requirement validation middleware for JWTs.
Owin.JwtAuth provides JSON Web Token authentication with X509 signing and configuration stored in App.config/Web.config.
A source code package designed to be used with LibLog to provide Owin logging.
Asp.Net Owin middleware for SharePoint Add-ins for Asp.Net MVC 5
Owin Middleware module for site mail.ru. Working fine with mvc 5.
Owin Middleware module for site yandex.ru. Working fine with mvc 5.
Provides OWIN Middleware to access LiquidProjection over HTTP.
Allows your owin app return content from ./well-known folder of your app in order to obtain SSL certificate from Let's Encrypt service
Zipkin instrumentation for Owin based on the Zipkin.net library (https://www.nuget.org/packages/Zipkin/). It allows to automatically log every incoming HTTP request into Zipkin.
OWIN middleware for Raygun.io
Add to Owin and get restful and signalr interfaces for CRUD operations with any Json data.
Middleware that enables your application to make use of GitHub's authentication.
PRE-RELEASE, do not use (but now supports SignalR).
AngularJS starter kit Spa secured client
ASP.NET Web API adapter for OWIN IoC container adapter
Infrastructure for an IoC container adapter into OWIN pipeline
Provides OAuth2 login support for various external sites.