AroLibraries contains extension methods Advantages of extension methods: (1) Operate on object methods (2) Hiding additional operation (3) Readable code

BCLExtensions is an extension method library for .NET 3.5 or higher which offers various extension methods for classes in the .NET Base Class Library (BCL)

This is just a collection of some of my Utility classes i use within my Open Source Projects

Build.Mvc is a helper extensions method library that turns the standard ASP .NET MVC HtmlHelper methods into jQuery-style chainable methods that allow you to expressively add markup and style to your MVC application.

A set of enhancement libraries for .NET developers. Provides tools, controls, helper classes & extensions to get the job done. Currently, this kit will focus on extending WPF Toolkit / .NET 3.5 / .NET 4 / WP7 / Silverlight 3 / Silverlight 4 / XNA 4

Straight forward generic toolkit for faster development with less code, written in C# on .Net 4.0. It features extension methods and helper classes for specific tasks.

A library for conveniant dealing with date and time in code and UI.

This library project contains classes and extensions which will allow easy handling of multi-threaded UI-accesses.

Method Chaining base UnitTesting Extension Methods and Dynamic Private Accessor for MSTest, NUnit, xUnit.net, MbUnit. This provides only single file.

Chaow Framework is the set of class libraries designed for enhancing standard .NET framework. It allows you to write more simple but powerful code.

This is a collection of extension methods, helper classes, and Win32 API wrappers. Releases come in Tested and Untested flavors. The Tested version is production ready but lacks many of the newer features found in the Untested version. As time permits, unit tests will be constructed and features will be moved to the Tested build.

The CLR security team codeplex site provides sample code and libraries of APIs to extend and debug the security APIs that ship with the .NET Framework.

A utility library containing boilerplate code, extension methods, new classes, and/or improvements to existing classes.

An evolving library of useful .Net v3.5 extension methods for the built-in CLR types, that simplify and accelerate .Net software development.

CuttingEdge.Conditions is a library that helps developers to write pre- and postcondition validations in their C# 3and VB.NET code base.

Craig's Utility Library contains various utility classes used in both web and desktop programming. The library contains classes to handle tasks such as encryption, compression, Microformats, serialization, dealing with Exchange, Active Directory, Twitter, Netflix, threads, etc.

A parser for relative dates (eventually times), such as "tomorrow", "yesterday", "three weeks ago" and "fourth monday in june". Created using TDD, feel free to suggest new tests! Makes use of and extends http://www.codeplex.com/DateTimeExtensions . The engine, being written from TDD, is heavily dependent on it's tests. If you modify any code, run the unit tests to make sure you haven't broken existing functionality. I'm using VSTS for the framework. The basic design ended up being a pre-processor, which changes the string to be parsed, and the parser, which actually recognizes dates. There is a recursive element in the parser as well.

A set of fluent extension methods for the System.DateTime class.

DevLib is a highly reusable collection of components and core functionalities addressing common crosscutting concerns.

The project contains some of a very useful helpers and extension methods for .NET and SharePoint.