Small Update:Mac wallet works well, we were just testing it. You can download it here:
https://github.com/graphdev/graph/releases/download/v1/osx-Graph-QT.dmgWe are working hard on the arbitrage bot behind the scenes, and will try to get some information out on that within a week. We'll be releasing a few more pieces of core functionality over the next couple days while we lead up to this big release.