The common approach to aligning GIS maps involves rubber-sheeting one map onto the other. You can achieve a much more exact alignment by ensuring that overlapping features share the same geometry. This also allows you to precisely align polygon boundaries with a road layer.
Example: US Forest Service would like their forest tract boundaries to precisely align with roads. MapMerger replaced portions of the forest tract boundaries that align with roads with their matching road geometry. This is an exact alignment because the polygon boundaries and roads that align are represented with the same geometry.
Bring your maps into alignment, precisely and efficiently with MapMerger.