this is where Catzcute4 puts his thingies (physics simulations, etc)

things based on gravity simulator:

things not based on gravity simulator

other cool websites

buttons

oh also I would make this stuff GNU-liscenced, but I don't actually know how to enforce that or even apply that without making my code way bigger, so please just give credit to me. not that I can check the whole internet or do anything about people who won't but ah well