Service Fusion can integrate with QuickBooks Desktop. This integration allows you to sync your data between the two systems using the Service Fusion Integrator. This plugin will allow you to import your customers, products & services into Service Fusion and will also allow you to sync data back to QB once you enable the auto sync.
Download and install the integrator using the link below:
Click here to download the Service Fusion integrator
The video below will show a typical integration process:
The Service Fusion QuickBooks Desktop Installation Guide can be downloaded using the link below: