JustMock is an easy, fast, feature rich framework for creating unit tests. This complete mocking tool allows for mocking of non-virtual methods, non-public members, sealed classes and static methods and classes - all within one simple API.

JustTrace is the easy to use memory and performance profiler tool by Telerik. JustTrace helps you profile .NET code, detect and resolve memory leaks, and optimize memory usage for applications in C# or any other .NET language. The rich information, context help, graphs and tables make it easy to understand the data at a glance and resolve the issue fast. For optimal performance and memory usage, JustTrace is a must for all your .NET applications.

Dotnet IL Editor is a software application that provides users with a simple means of disassembling .NET applications, making changes to the IL code, recompiling it and running it inside a debugger.

Integrate a file manager into your ASP.NET application or site rapidly.

Browse and manage files with access control.
Accept files with the advanced upload functionality.
Offer a structured and neat download area.

.NET Demon compiles your code continuously, so you see errors as soon as they are introduced:

The list of errors in your solution is always up to date
Quickly see the overall status of your solution in the build status indicator
Errors are displayed within the Visual Studio error list

Spring.NET Social helps you to simplify authentication (OAuth) and API binding with Software-as-a-Service (SaaS) providers such as Facebook and Twitter. Spring.NET Social makes it easy to add support for service providers that are not already supported by the framework. If you review the existing client projects, such as Twitter, Dropbox, LinkedIn and Facebook, you will discover they are implemented in a consistent manner and they apply a set of well-defined extension points.

Oxygene and RemObjects C# (formerly code-named Hydrogene) are a modern development tool stack for creating applications for all three major development platforms: .NET, Cocoa and Java.

Leverage the same language skill set, no matter what platform(s) you are developing for, without losing the benefit of working natively and directly with the underlying platforms — be it the .NET Framework, the Java and Android Runtime Libraries, or the Cocoa and Cocoa Touch Frameworks.

CryptoLicensing for .NET provides a robust, yet easy way to add licensing, copy-protection and activation capabilities to your MFC, ATL or C++ applications, libraries, components and controls, Windows services and Office Add-Ins. CryptoLicensing for MFC uses the latest military strength, state-of-the-art cryptographic technology to ensure that your software and intellectual property is protected.

CryptoLicensing for MFC provides a robust, yet easy way to add licensing, copy-protection and activation capabilities to your MFC, ATL or C++ applications, libraries, components and controls, Windows services and Office Add-Ins. CryptoLicensing for MFC uses the latest military strength, state-of-the-art cryptographic technology to ensure that your software and intellectual property is protected.

TX Text Control .NET for Windows Forms is a royalty-free, fully programmable rich edit control that offers developers a broad range of word processing features in a reusable component for Visual Studio. It provides comprehensive text formatting, powerful mail merge features and all word processing key concepts such as table support, images, headers and footers and page sections.