I began using Groupy in 0.85 beta. Now in 1.15 beta. Many bugs in the beggining and still some -please Stardock, keep working on it- but, please, let me say that I can´t think about using Windows without Groupy. Is, literally, amazing how my day to day workflow has improve with the Tabs landscape. I LOVE  IT. And Windows SETs in the future, will see, but Stardock: you certainly deserve a huge thanks for what you´d done with Groupy so far. I insist: please, keep improving it. A great software and concept, no doubt.