ExportXL is an easy to use AutoCAD add-in for quantity takeoffs. Send area, length and volume data to different workbooks/ worksheets.
Easily build export lists in large drawings and join objects or make "convex hulls" in the process.
xlDEA performs Data Envelopment Analysis (DEA) in MS Excel. It produces extensive results for the main DEA models used today, and automatically creates Excel charts and customizable Macromedia Shockwave Flash charts.