Downloading REFPROP 10.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available.
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's installer file is commonly found as REFPROP.EXE. The actual developer of the software is NIST. The software is categorized as Development Tools. The most popular versions among the program users are 10.0, 9.1 and 9.0. This PC program can be installed on Windows XP/Vista/7/8/10/11 environment, 32-bit version.
From the developer:
This program calculates the thermodynamic and transport properties of industrially-important fluids and their mixtures. These properties can be displayed in tables and plots through the graphical user interface; they are also accessible through spreadsheets or user-written applications accessing the REFPROP DLL or the FORTRAN property subroutines.
You may want to check out more software, such as SQLTools, SQL Dependency Tracker or SQL Multi Script, which might be related to REFPROP.