DoubleCad - Free 2D CAD application

DoubleCad - Free 2D draughting software
http://www.doublecad.com/

DoubleCAD™ XT is .DWG compatible, as you would expect.

What you may not expect is a DoubleCAD™ .DWG file, containing ADT-compatible walls and self-aligning blocks, can be brought into AutoCAD® or AutoCAD LT® and designs retain their self-healing properties.

DoubleCAD™ XT:

Imports all SketchUp™ geometry, layers, and components,

Converts all SketchUp™ components to DoubleCAD™ blocks to optimize drawing performance,

Creates a paper space from each SketchUp™ scene,

Allows you to visualize 3D models, even with hidden line and perspective, giving you a printable 2D drawing from the moment you import a modelDoubleCAD™ lets you develop construction documents quickly from SketchUp™ models.

AutoCAD® and AutoCAD LT® don't come close.

This all sounds great, so if you give the interface a try, please leave comments back here.