SharpDevelop 3.0 includes WPF and XAML support

SharpDevelop 3.0, an open source .net IDE, includes WPF and XAML support.

The designer replaces SharpDevelop’s property grid with its own, WPF-based property grid. This property grid will provide support for editing attached properties and data binding in the future.

Unlike the Windows Forms designer, which is included in the .NET Framework and merely hosted by SharpDevelop (which isn’t as easy as it sounds); the WPF designer is written from scratch. Thankfully WPF makes this a lot easier than writing a Windows Forms designer from scratch would be.