Havent done a LOT with it, it's sort of a long-term project, but it's open source, freeware, etc. Only thing, I'm pretty certain it requires a website of your own for it to be installed on/with..
This is the official website of Gallery, the open source web based photo album organizer. Gallery gives you an intuitive way to blend photo management seamlessly into your own website whether you're running a small personal site or a large community site.