on this page of a free software CAD software, on the bottom, i saw that they get a build-bot sponsored from a mac cloud company. in case this is still an issue with spring, it might be worth contacting them, to ask if we could get the same deal.
http://librecad.org/cms/home.html
and yeah.. i see that this looks a lot like spamming, and would not be angry if it was deleted. 