IMSI/Design's DoubleCAD XT is a compact CAD utility for Google SketchUp. Based on the developer's professional CAD product, DoubleCAD XT is similar to other slimmed-down CAD packages, but it offers more than most of them, for less: it's free.
DoubleCAD XT's interface will be familiar to many, even those with no CAD experience, since CAD tools generally look and function much like photo editors and other typical graphics utilities, and DoubleCAD XT is based on pro software. It's well designed, as you'd expect from design software. It's easy to use if you have CAD experience but easy to figure out if you don't. For a free tool, it offers basics and extras too numerous to list entirely, but a few are: Enhanced .SPK compatibility with SketchUp, layers, a 3D-to-2D flattener, a brush editor, and automatic scaling. DoubleCAD XT is a great choice as a .DWG viewer for those with older AutoCAD or AutoCAD LT versions that can't read the latest formats. It's also handy for those who need to import or otherwise view and utilize CAD images for other purposes, such as presentations or digital publishing.
DoubleCAD XT is certified for both Windows XP and Vista, but not yet in Windows 7. It downloads as a Zip file, but at nearly 58MB, that's not necessarily a bad thing. It also requires you to enter the provided serial number--not too many hoops to jump through for such fine free tools. Highly recommended.
DoubleCAD XT is a free full featured 2.5D CAD application that has the power to handle all design and detailing needs. It is free to use for personal, educational, or commercial use without restriction or limitation (Yes, you read that right). With its unmatched support for many industry standard design formats including Google SketchUp and AutoCAD, DoubleCAD XT v5.0 assures great interoperability with the applications you use to help optimize project workflow. Based on IMSI/Design's award-winning CAD code with over two million copies sold worldwide, DoubleCAD XT works like AutoCAD LT but goes beyond in a number of important areas, including innovative features like: Self-healing, ACA-compatible walls; Self-aligning blocks; Transparent fills; Draw order by layer; Bezier curves; Flatten 3D to 2D views; Advanced polyline editing; Automatic scaling of units between drawings; Input multiple unit types on-the-fly; Object snap prioritization; Brush editor; Smart dimensions; split objects, Import xrefs.
DoubleCAD XT is also an excellent multi-format Drawing Viewer capable of not only simple viewing, but full editing and markup like no other free CAD based application available today. In addition to viewing and editing capabilities, DoubleCAD XT also makes a great file converter that can import and export files to DWG, SKP, DXF, DWF, PLT, WMF to name a few. Regardless of what CAD applications you are currently using, DoubleCAD XT makes a perfect companion and even better replacement that will quickly become one of your favorite tools to help increase your competitive advantage. Please use trial Serial Number: DCAK-6746-0366-4350-3180