I'm just checking out hashco.ws for the first time and cannot make any comments about quality or service, but one thing I want to ask:
In your opinion, how does one capital letter in a password raise the security?
Honestly, switch that off. It doesnt make a real difference.
It does a lot.
For example: any way of increasing the size of the char set used to make passwords lowers the risk of successful brute force attacks.