Extract the zip files to a folder of your choice and open the add-in (.xll) and workbook (.xls). Building these requires the xll library.
|xllrandom.zip [website]||Random number engines and distributions from the C++ <random> library.|
|xllregex.zip [website]||Regular expressions from the C++ <regex> library.|
|xllutility.zip [website]||Random OPERs, timers, and Baby Huey to bang on your spreadsheet.|