Walkabout Software is what I use. I have tried FiledHarmony, MhelpDesk, Service Fusion, SwiftLink, and Kickserv. None of them work like Walkabout does. It has a phone app that lets the tech pull their jobs in the morning and not need service to see calls and complete them. Their system is also online and you can log in anywhere.
It's made by the guys over at Don Bacon/Midwest I believe, it fitsvery well with the appliance repair trade. They also have very good support so far.
You can also submit warranty claims, track inventory, counter sales, and create part PO's.
So far(about 3 months), loving it.