For those who want more out of the commonly-used mapping APIs from Google, Yahoo, Microsoft, etc, but don’t want to get too heavy on the programming, Mapstraction is for you. Mapstraction is a javascript mapping abstraction library that lets you easily use different mapping APIs all at once (or switch between them).
This means you can use functionality from one API and apply it to another, or you can just put a whole bunch of synced maps on one page like above. Other features include geocoding, polylines, marker filters, and GeoRSS and KML, so go for it. Go map crazy.
[via ReadWriteWeb]
