Yes, it uses Qt for the GUI. Thanks ^_^

I am very out-of-the-loop on Linux. Your download page says:

"Your system must have at least glibc-2.17, as well as X11, ALSA, libGL, librt, libdbus."

What rough percentage of modern Linux computers would you say that covers? 99%, 90%, 50%?

Should be very close from 90%. Anything >= Ubuntu 14.04 (just tested it quickly through docker) or CentOS 7 (on which the builds are done) should work