Check out redtail technology, we use this for our agency, as far as commissions, make it simple. Excel.
Redtail should do all of the client tracking you would want to do. I think they will give you a 30 day free trial, and we pay $60 per monther for the service, i would say that it is definetely worht the money. Our office is entirely paperless, we scan and upload all policies into the system and then file the original app by moth, this way we always have the originals but is much less time consuming than always going and looking for files. good luck. Here is the link to Redtail
Redtail Technology : Technology for Financial Professionals