I have for some time been planning a scaled down version of VLXE. The result is now out and is called VLXE Lite.
It is a free version that has some limitations but it comes with the same calculation engine, databases and interface as the commercial versions.
The goal are people who does not have a need for performing calculations on complex mixtures but are just looking for a low-cost quality solution to there PVT and phase equilibrium problems.
It can also be used as an Excel interface to DIPPR 801 Lite.
If you want to try VLXE Lite it can be downloaded here:
http://www.vlxe.com/clientaccess/Lite/lite.aspx
VH
Torben