gpfcalc is a GTK+ front-end for pfcalc, a pipe friction calculator using the Darcy-Weisbach equation. It computes major, minor, and static losses for flow through pipes or ducts. Up to 1024 pipes or ducts can be defined by specifying hydraulic diameter, length, roughness, flow rate, temperature, and elevation change. Data can be saved in a comma separated values file (CSV) and imported in the spreadsheet program of your choice for further processing.
The qpfcalc application is a Qt frontend for pfcalc, a CLI pipe friction calculator. It is similar to gpfcalc, the GTK+ frontend for pfcalc. There are two versions of qpfcalc, one for Windows and one for Linux. The Linux version should be easy to compile and run on any Unix-like operating system with few minor modifications. For the application to function properly the pfcalc backend must be installed. For the Windows version, this is not needed as qpfcalc is distributed along with all the files needed to run, including pfcalc and Qt libraries.