37signals-style layout template

Question

My wording might be a bit off, but I wonder if there's an open-source HTML/CSS template/framework for creating 37signals-style layouts, much like this:

_{(source: basecamphq.com)}

Of particular interest is the tabbed layout and the sidebar to the right.

Answer 1

Not all free, but still a good reference: 34 Outstanding Admin Panels for Your Web Applications

Answer 2

Try some open source template sites then, most likely you'll have to get something similar and edit it.

E.g: ( http://www.oswd.org/ )

Goodluck

Answer 3

There are a couple of WordPress Basecamp style themes about:

Prologue

P2

GTD