http://www.actiprosoftware.com

Actipro Software is a leading provider of .NET user interface controls for the WPF, WinRT, Silverlight, and WinForms frameworks. They have been making .NET UI controls since the inception of .NET and were one of the first vendors to release a commercial WPF control. Their wide array of products cover everything from docking windows, MDI, ribbons, property grids, gauges, editors, charts, and much more. Actipro is most well-known for their robust SyntaxEditor, a syntax-highlighting code editor control, which allows developers to easily bring a Visual Studio-like code editing experience into their own applications.