CoolProp is an open-source, cross-platform, free property database based in C++ that includes pure fluids, pseudo-pure fluids, and humid air properties.
To get CoolProp head to Downloads or check out the examples
Changelog is here
Documentation is here
C++ documentation (doxygen) is here
As of February 2014, 114 pure and pseudo-pure fluids are included as well as 50 incompressible liquids.
If you have found a problem with CoolProp, please file a ticket at CoolProp support ticket and we will do our best for a speedy response (usually less than 24 hours)
You can also join the Google group: coolprop-users@googlegroups.com
Ian Bell , Sylvain Quoilin , Vincent Lemort , University of Liege, Liege, Belgium
Jorrit Wronski , Technical University of Denmark, Kgs. Lyngby, Denmark