The Phrontistery‘s Compendium of Lost Words is a handy place to find all that stuff that’s in the OED, but that you don’t want to have to plow through everything to get to. The rest of the site may be interesting, too.
And, yes, phrontistery.com is taken (of course). Owned by yahoo, it appears. I didn’t check out the site, or even find out if one exists.