You can stop searching, that does not exist.
You must go to the carriers directly for quotes on group health. Too many differences and variables to have a multi-state universal quote engine for group health. He should partner with an experienced agent first to get his feet wet.
There are some online enrollment and management systems. But I'm not aware of any that quote too.
Here are some resources to try:
But many of those are targeted towards large firms with large groups.
Agile CRM is good for groups. It has a nice filter system for company/employee. Lots of features. But it's a generic CRM.