gpfcalc 1.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The gpfcalc installer is commonly called gpfcalc.exe. The actual developer of the free program is sargas.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program lies within Education Tools, more precisely Science Tools. The most popular versions of the software are 1.0 and 0.1.
From the developer:
The gpfcalc application is a GTK+ frontend for pfcalc, a CLI pipe friction calculator.
The pfcalc stands for pipe friction calculator and is a CLI program that computes pressure drop in piping systems using the Darcy-Weisbach equation. The program is capable of computing minor and major pressure losses (pipe friction losses) for flow in pipes and ducts.
The aim is to provide an open source alternative to similar proprietary software.
You may want to check out more software, such as MB Free Muhurtha Astrology, CDtool or Travoltage, which might be related to gpfcalc.