You can view .dwg files with Autodesk® DWG TrueView™ software, a free* stand-alone .dwg viewer with DWG TrueConvert™ software included. Built on the same viewing engine as AutoCAD® software, DWG TrueView enables you to view .dwg and DXF™ files, just as you would in AutoCAD. By installing the free* Autodesk® Design Review software, you can then open .dwg files as well as view, print and track changes to Autodesk 2D and 3D design files without the original design software.
Autodesk Design Review
Accelerate your design reviews on your desktop with Autodesk® Design Review software. It’s the free*, all-digital way to view, mark up, print, and track changes to Autodesk 2D and 3D files—without the original design software. Work with a wide variety of file formats, including DWF™ and DWFx, DWG™ and DXF™ (requires installation of free DWG TrueView™ software) and Adobe PDF, as well as several image file types including .bmp, .jpg, .gif, .pcx, .pct, .png, .rlc, .tga, .tif, .mil, .cal, and more.
The best wood structural software I have found.
Weyerhaeuser FORTE® Software
Sizing software for joists, beams, posts or studs.
Digital Canal Website
Digital Canal FTP downloads
Digital Canal has several structural programs all easy to use. The wind software is highly recommended. You can try any of the products for 3-5 days.
Enercalc – Structural Engineering Library
45 Day try before you buy.
Good free software.
Power Sizer® Software Free software Anthony Forest Products.
Building Energy Codes Software
REScheck The REScheck product group makes it fast and easy for builders, designers, and contractors to determine whether new homes, additions, and alterations meet the requirements of the IECC or a number of state energy codes.
COMcheck The COMcheck product group makes it easy for architects, builders, designers, and contractors to determine whether new commercial or high-rise residential buildings, additions, and alterations meet the requirements of the IECC and ASHRAE Standard 90.1, as well as several state-specific codes.
Free Office Suite