Kall8 is the only fully integrated toll-free service that offers you traditional 800 service in addition to a complete set of online tools to manage and track your toll-free number in real time.
I've used kall8 for a while now and I can say it is very good for the small business. Cheap rates on basic U.S. service. However vanity and preferred numbers can be expensive. And Canadian rates are $0.26 per minute. Ouch!