I've got http://openpistemap.org in a vaguely working state, but it still needs a *lot* of work. At the moment it is only rendering data in the Verbier - Zermatt region and won't automatically render new data.

I've had a go at setting up a contour map on it as well, but so far haven't had much success... generate_tiles.py chucks up lots of "proj_init_error:failed to initialize projection with:+proj=latlong" after working through most of
http://wiki.openstreetmap.org/index.php/Contours_on_the_Cycle_Map, so that's something to continue fiddling with tomorrow.