Try heybucket.com. Don't be afraid to ask what the other sites are. They won't be offended. Also purchase Cathy Aradi's book on the college recruiting process. The process is much the same as baseball. You can learn how to do everything yourself from Aradi's book the recruiting websites claim to do for thousands of dollars.
The difference in softball is girls usually showcase and verbal earlier due to physically maturing earlier. By the beginning of the summer of junior year players are usually verbally committed.