ChemLab There is a fee for this one, but it is well worth the price! They are truly interactive and you can design your own simulations! Go to the downloads page for a free evaluation trial Dartmouth ChemLab This site has some very good interactive virtual labs plus a terrific interactive periodic table! Virtual Chemistry Chemistry and Physics applets and phylsets from Davidson University. You can also download and use on your own webpages. Virtual Chemistry Lab This site has virtual experiments as well as webcasts on chemistry topics.