Github, appsumo, dropbox, lasfm (not a "stsrtup" anymore, I guess), hipchat, rovio, zynga and a few ios devs (goodreader, instapaper, quickoffice, mypad)... I'

Github, appsumo, dropbox, lasfm (not a "stsrtup" anymore, I guess), hipchat, rovio, zynga and a few ios devs (goodreader, instapaper, quickoffice, mypad)... I'm pretty sure there are others, but these are the ones I can remember from the top of my head. And all of them RULE!