Good panel interface component for C#?

Question

Any nice Paneled user interface component COM/ActiveX/Source-code for C#/VB?

Like what VS has internally:

• Dock to screen edges
• Slide open/close (unpinned)
• Pin open
• Group in tabs

And if possible, open-source/free.

Well, because otherwise I'd have to develop an interface system myself.

Answer 1

DockPanel Suite! Its an open-source docking library for .NET Windows Forms development which mimics Visual Studio .NET.

Answer 2

We use the DevExpress (devexpress.com) Component Suite, which has a Docking Manager that does that sort of thing.