HEATKEYS

Find latitude and longitude of any known location by clicking it on a map or entering zip codes or addresses. Batch geocode a list of locations. Convert decimal degrees to degrees minutes seconds and vice versa.

GPS Visualizer is a free utility that creates customizable maps and profiles from GPS data (tracklogs & waypoints), addresses, or coordinates.

Make maps from a list of multiple addresses, create a mobile optimized map or locator. Free hosting for your custom interactive map or locator.

A free and open source web-based GIS application portal for geocoding, geocode correction, address validation, and data capture

MapLarge provides a platform to build fast, scalable online maps of your data. Mapping Solutions For: Business Intelligence, Government, Consumer Websites and Corporate Applications

Map Developers will work with you to design a Google Maps mashup to add to your website. The map could show a single location, or be a custom mashup containing all of the information your user needs.

Batch geocoding service - Batch Geocode in four easy steps.

Esri

MapQuest Developer Network welcome page for guest users. Get all the information you need and sign up for the MapQuest Platform.

Smart batch geocoder for businesses and professionals. Excel and CSV supported; export to interactive map