Download of InnerSoft CAD 3.7 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This software is a product of InnerSoft. The latest version of the software can be installed on PCs running Windows XP/7, 32-bit.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software lies within Photo & Graphics Tools, more precisely 3D Design. The most popular versions of the program 3.7, 2.8 and 1.4. The program's installer files are commonly found as InnerMenu2004.exe, InnerMenu2005.exe, InnerMenu2006.exe, InnerMenu2007.exe or InnerMenu2008.exe etc.
From the developer:
InnerSoft CAD is a plug-in for AutoCAD that installs a set of productivity tools for Civil and Survey engineering, Counting, Estimating and measurements in construction project budgets. With this app you can export to an Excel Sheet the values of Area/Length property or coordinates for various AutoCAD entities.
You may want to check out more software, such as InnerSoft CAD Demo for AutoCAD 2011, InnerSoft ISBH or InnerSoft STATS, which might be similar to InnerSoft CAD.