Top 20 NuGet owin Packages

Middleware that enables an application to support Meetup OAuth authentication workflow.
Middleware that enables an application to support StackExchange OAuth authentication workflow.
Package for using bundling in OWIN
Package for using the standard System.Web.Optimization bundling with Bundler
Middleware that enables an application to support Odnoklassniki OAuth authentication workflow.
Middleware that enables an application to support VK OAuth authentication workflow.
Middleware that enables an application to support mixi's OAuth authentication workflow.
Middleware that enables an application to support Yahoo's OAuth authentication workflow.
Middleware that enables an application to support Yahoo Japan's OAuth 2.0 authentication workflow.
Middleware that enables an application to support Weibo's OAuth authentication workflow.
Provides type-safe calls between FunScript clients and HashBang servers via SignalR.
Add log4net logging facility easily to existing your OWIN applications.
Extensible versions of common Owin Oauth Middleware (Facebook, Google, Microsoft, etc) that allow for multi-tenant and other complex scenarios.
Incredibly easy and reliable way to perform fire-and-forget, delayed and recurring long-running, short-running, CPU or I/O intensive tasks inside ASP.NET application. No Windows Service / Task Scheduler required. Even ASP.NET is not required. Backed by Redis, SQL Server, SQL Azure or MSMQ. ...
Core components for Hangfire (background job system for ASP.NET applications).
Extensions to the base Container4AspNet framework to enable configuration of Castle Windsor.
Asp.Net MVC specific configuration of Container4AspNet using Castle Windsor.
Asp.Net WebApi specific configuration of Container4AspNet using Castle Windsor.
LightNode(as Micro REST/RPC Framework) Formatter for JSON by Jil + LZ4.