Ever find yourselves needing a calculator tailored for architects? Well, archCalc is a nifty construction calculator designed to run as a standalone calculator or alongside with other programs. What I like most about this calculator is that you can have archCalc float above other programs allowing anyone to use it while viewing your other documents. Pretty handy if you don't have multiple screens or just need it to be visible while viewing your CAD software or spreadsheet etc... archCalc runs on Windows and Macs and is free to use with minor limitations and even if you wanted to purchase it, it does not cost much. I highly recommend it to people using CAD.