Check out Mark Ingbretson's Vexed pages . It may work on OS X, but I haven't tried it yet. Python is a separate install, and I think it might need bash, too. Maybe it's a Windows only thing, or perhaps my linux installation is screwey. Matter of fact, I could only get dithered 1-bit images, couldn't even get greyscale to work.
Documentation is kinda messy and hard to figure out.
No Quickstarts, no overview. HTML - local. Cron jobs - not a big deal, but maybe handy. A quick cheat-sheat on formatting the tags to add to your home.html document. There's no way to show the DB list automatically at startup.