The Open Weather Map PHP Library enables users to parse weather data and history from the Open Weather Map API. The library also tries to normalize and abstract the weather data to remove inconsistencies.
Mike Pegg does a great job tracking the most interesting maps mashups over at his Google Maps Mania. Occasionally he does a roundup of tools for creating or enhancing Google Maps.
Google Maps API is one of the most popular APIs in our directory. A month back, we reported on Google’s plans to charge for high usage of its Google Maps API. This led to a good amount of confusion among developers on whether they would fall under the category of high usage and if occasional spikes in usage would end up labeling their applications as heavy users. Meanwhile, MapQuest capitalized on the opportunity to declare its maps 100% free.