CutList Optimizer - A free cutlist optimizer
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
MaxCut - It's easy! You input the sizes and materials, MaxCut does the rest!
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
SketchCut - Simple App for cutting sheet materials (chipboard, MDF, glass, plastic, etc.).
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.