Experience calculator, time/distance calculations, turning tool. This
is kinda what I based my program on. If you don't need the extra junk that
my software has, then you should check his out.
Roll up to 20 dice at once. Assign up to 24 custom die rolls, which can
test for success or failure against a value or compute AD&D To Hit armor
class.
Mark Rosenfelder's language site. He originally wrote a tool called
psrGrammar, which took rules and expanded them into words. This was later
refined by Chris Pound.