apitize 

Hammock is an HTTP API library for .NET that greatly simplifies consuming and wrapping RESTful services.

TweetSharp v2 is a fast, clean wrapper around the Twitter API. It uses T4 templates to make adding new endpoints easy.

A JSON parser in C#, supporting dynamic deserialization in .NET 4.0

The specification pattern for composable business logic, in C#.

Capturing CLR and application-level metrics. So you know what's going on. An idiomatic port of Coda Hale's Metrics for Scala and the JVM.

An implementation of OAuth 1.0a for .NET

MVC support for the metrics library.

Smart internationalization for .NET web apps; Globally recognized interface; localize like the big kids; Localizes everything; controller calls, views, validation attributes, and routes.

A simple interface for function-descriptor style IoC containers. Includes an embedded Munq container by default.

Provides support for the general availability of an HttpContext in either WebHost or SelfHost scenarios. Use this in place of HttpContext when developing middleware, and add the HttpContextHandler first in line... More information

A smart paging library for .NET queryables and enumerables.

Provides unit-of-work style connection scoping to any ADO.NET supporting database.

Apitize is an embeddable Hypermedia API server.

Easily render and send emails in your applications. Supports templating, parallel delivery, observable folders, retry policy, backlog, and more.

A common caching interface with support for graphing dependencies.

A database-agnostic SQL generator for common tasks.

An idiomatic bulk insert interface for databases. Allows you to bulk insert arbitrary types to an underlying database using a fast insert mechanism specific for that database. Currently supports SQL Server,... More information

Painless currency management in .NET.

A simple logging abstraction. You don't have the option of using immediate-mode logging, so you never accidentally kill performance.

A tiny aggregator for self-registering HttpModules.