@Whosa_whatsis , they needed a reason to claim that “nobody helps us” back when they went closed source. Nobody helped them because frankly, they were asses when it came to open development.
I am afraid that Repetier got the whole idea of Open Source backwards. I think they were hoping to get free software they could monetize, and give nothing in return. The cynical might say that the purpose of Repetier firmware was just to sell Repetier Host software.
Of course, it’s quite possible to fork Repetier Host from it’s last open release and create a community edition. It’s been forked 150 times in github, some of those seem to be active developments.