Refprop 10 Free Download 2021 ((free)) -

CoolProp: The most popular free alternative. It is C++ based, open-source, and integrates seamlessly with Python, MATLAB, and Excel.

NIST Refprop is a proprietary database. While many websites claim to offer a "free download" for the 2021 version, these often involve significant risks: refprop 10 free download 2021

NIST Standard Reference Data (SRD) Store: The official version must be purchased through the NIST website. Once purchased, you receive a permanent license and access to updates. CoolProp: The most popular free alternative

If you need the software for your projects, there are several legitimate paths to take: and integrates seamlessly with Python