How about
Accountlab Plus, I was using it before switching to CE, because AL was taken over by the company that handles Fantastico. They decide to rewrite the whole program and the new was suppose to be out a couple of months ago and they did supply the code for testing only at this time. I believe it could be a great billing software in the near future with all the qualities of Autopilot (which I used for several months) and simplicity of Client Exec. The good part is I believe they are setting the cost under $50.00