Sun-Up Software is the creator of PCB View Station™.  If you work with PCB data, this is the tool you need.  

Do you perform design verification?  Check layouts?  Review board fabrications?  Do you troubleshoot and repair PCB's?  Or do you simply need an easier way to find parts or verify part numbers on an assembled circuit board?

Whatever your need, PCB View Station™ is your tool.  You don't need another expensive CAD tool seat, or a single-vendor board viewer.