Something like Steam. I've got a bunch of old games and other software, CDs, floppy images, etc., with registration keys and so forth (sometimes multiples), as well as newer stuff I got through Humble Bundle, or even various free/open source games, servers, etc., but installing them can be a pain. I'd like something that could host the files, list the games, and install them on a whim, along with self-hosted "cloud" storage so I can switch between computers easily. I already use Steam, of course, but it doesn't host my old games, at least not without paying them for the privilege. My boss... Would probably be interested, actually. Not business related, but still.