Yahoo! GeoPlanet is a resource for managing all geo-permanent named places on Earth. The API provides an open, permanent, and intelligent infrastructure for geo-referencing data on the internet.
The Yahoo! Local API provides a comprehensive database of information including business address and phone, category, rating, distance, URL, and traffic alerts.
PlaceFinder is a geocoding Web service that helps developers make their applications location-aware by converting street addresses or place names into geographic coordinates (and vice versa).
Placemaker helps developers make their applications location-aware by identifying places mentioned in text, disambiguating them and returning unique identifiers (WOEIDs).
The Weather RSS feed enables you to get up-to-date weather information for your location.