It used to. I haven't used it in years, and I'm no longer sure if it still exists or where to find it if it does, since the UI has changed a few times over the years; the last of which was less than a year ago and it really overhauled everything. But also, so many games can literally just be copied from their install directory and work on another machine without Steam or cracks. There's no good way of knowing which ones without trying it, though. At least not to my knowledge.