You can get the Windows binaries here:
https://drive.google.com/folderview?id=0BzWyTGWIwcYQS0JRQkw2Q3J6R1U&usp=sharing
or here: https://github.com/fpoussin/QStlink2/releases
The Ubuntu/Debian packages are available on my PPA: https://launchpad.net/~fpoussin/+archive/ppa