Telerik UI for WinForms includes more than 90 user interface controls you can use to fulfill the most demanding desktop or tablet application requirements. All-way customizable GridView, Form, Chart, Scheduler, RichTextBox and other essential controls enable you to build any Line of Business or Modern application in less time while staying under budget.

As the world leader in user interface development tools and experts in User Centered Design, Infragistics empowers developers to build and style immersive user experiences and rich data visualization in line of business applications across all platforms Windows Forms, WPF, ASP.NET and Silverlight. Infragistics also has a range of value-added services including UI testing tools, support, training and consulting services.

JustDecompile is available for free download individually, or it can be purchased with priority support as a part of DevCraft - the most comprehensive HTML5 and .NET toolbox. JustDecompile is fast. In fact, really fast. When tested against the leading competitors, for .NET framework decompilation time, JustDecompile came out 10 times faster than the leading commercial decompiler. Try it and verify the results for yourself.

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.