The last couple weeks I've been working on a small diablo site idea with hero tracking and calculators. I only have one hero myself (a wiz) so my testing has been limited and I'd love to have some new people come test things!
As an example, you can see my player profile here:
You're welcome to add your own characters by typing your battletag into the "Add or Search" box on the top right. Be warned that if you have a lot of non-NA characters it can take a while to process (I request the full details of every item you're wearing).
I also made a reddit thread about it in /r/diablo if you want more information: