Telerik OpenAccess is an Enterprise-grade .Net ORM that does the data access plumbing in desktop and web applications. Supporting forward (model-first) and reverse (schema-first) mapping, the tool offers transparent persistence for your DAL and business objects. OpenAccess ORM provides tight Visual Studio integration and allows you to seamlessly create database independent code. Take full control of the mapping process and generated model with the powerful Visual Designer for OpenAccess ORM and the advanced features for code optimization and caching.

InstallAware Express provides an unsurpassed feature set, enabling you to build sophisticated installations in record time without any programming or scripting skills.

Gaia Ajax Web Widgets is an Open Source Ajax library for developing Ajax applications for ASP.NET. (2.0 and higher) It is a commercial library, but has a GPL version for developing Free Software with. It has a different approach than most of the other Ajax widgets libraries that mostly update the complete HTML and sends HTML over the net. Instead Gaia has chosen to mirror the control class hierarchy on the client side and post JavaScript updates to concrete objects. It relies heavily on Prototype.js and Scriptaculous in its core and consists of fairly advanced JavaScript code like prototype inheritance and JavaScript "polymorphism". Like Google Web Toolkit, JavaScript is abstracted away, so the developer can develop in the .NET language of choice without knowledge of JavaScript.

A lightweight Behaviour Driven Development (BDD) framework. Describe behaviour in plain text using the Gherkin business language, i.e. given, when, then. Easily execute the behaviour against matching F# tick methods (let ``tick method`` () = true) or attributed C# or F# methods.

CodeTrack is a free .NET profiler with some extra tricks up its sleeve.
On top of the profiling features it also allows debugging and analyzing code execution.

NBehave is a framework for Behaviour-Driven Development Behaviour-driven development (BDD) is an evolution of test-driven development (TDD) and acceptance-test driven design, and is intended to make these practices more accessible and intuitive to newcomers and experts alike

ARI, which stands for Asynchronous Remote Interface is a .NET Ajax library that eliminates all of the complexity of Ajax programming for .NET based web sites. ARI is a drop-in solution that allows you to make remote calls to all of the server side code residing in the App_Code directory of your web site with an extremely simple syntax. Underneath the covers, ARI is a very powerful .NET Ajax programming library that fully handles data marshalling between JavaScript and .NET, remote invocation through reflection (including method overloads), callback functions, error handling, exception handling, protocol serialization and deserialization, and more.

.NetSpec is a small test extension framework for the Visual Studio Testing Framework. Its main goals are:
* Allow users to write tests in an RSpec like syntax more in terms with Behaviour Driven Developement (BDD)
* Make tests easier to read
* Integrate with TFS team build and Visual Studio test view

JustCode is an agile development add-in for Visual Studio 2005, 2008 and 2010 that enhances .NET development productivity by providing blazing fast solution-wide, on-the-fly code analysis and error checking, smart code navigation and refactoring features. With a cross-language engine, JustCode provides features for C#, VB.NET, ASP.NET, XAML, JavaScript and HTML and supports multi-language solutions. JustCode instantly detects errors throughout your current solution in real time. Whenever code is changed, JustCode quickly checks for errors and exposes them in an easy to use Visual Studio error sidebar. With JustCode, you can instantly see how changes in a file affect other files in your solution, even across .NET language barriers.

Visualize and analyze dependencies between metadata elements of .NET components without decompiling or having access to the source code. .NET Metadata Expert offers a quick and easy way to access namespaces, data types and type members, attributes and keys of .NET assemblies without having to disassemble. Working via reflection, .NET Metadata Expert visualizes dependencies between metadata elements by drawing hierarchy graphs and offering several other views.