Visual Treemap in Winforms

Question

Are there any frameworks for building squarified treemaps in C# 2.0 WinForms?

Something similar to this:

Answer 1

I know you asked about WinForms, but I'm sure someone will hit this page when searching for WPF tree maps. This currently seems to be the best WPF freebie out there, though I found a few minor issues with it, it's still pretty good:

http://treemaps.codeplex.com/