HOOPS has been around for over 10 years. Its basic concepts--a high-level object-oriented platform-independent graphics function library with minimal performance compromises--have not only been preserved, they have been highly developed.
Meanwhile, Linux is playing "David" to Microsoft's "Goliath."
Guess who makes the world's most popular *nix package--by a long shot? Yes, it is Apple: OS X.
Putting the pieces together: Engineering software developers--especially those who already use HOOPS on other platforms--now have less reason than ever before not to port to the Mac.
A Mac engineering workstation? I spent years begging Apple for one, and ultimately gave up. But the spark is rekindled now...