FOSCON is a "free, fun gathering" of Ruby developers held alongside the O'Reilly OSCON conference currently taking place in Portland, Oregon. It's tomorrow (Wednesday, July 23) at CubeSpace (near the Oregon Convention Center) from 6pm. The always proactive Portland Ruby Brigade have organized it, and a surprising number of interesting presentations are already planned, including one on IronRuby from John Lam of Microsoft. A live coding competition will also be taking place.