Not sure what exactly you're referring to. All 3 of these things have been available in .NET Win Forms since 1.1 or perhaps even 1.0. Could you give more information on what you mean by each of these?
Codeplex is usually where I start my search for Open Source controls before looking for a pay version.
By docking I suppose you mean draggable and droppable panels that can be "docked" or "floated". Check out Avalon Dock.
http://avalondock.codeplex.com/ Similar, but not quite as good as is used in the Visual Studio IDE Application itself.
