AskGeo API: Interactive map, web API and Java library for finding out the time zone information for a given location (latitude and longitude). Submit latitude and longitude, and the API returns the unix (Olson) time zone ID, the Windows Standard Name for the time zone, and the current offset from UTC.
Micello API: Micello is an indoor mapping service. Micello offers indoor maps of venues, such as shopping malls, airports, hospitals, and museums. Micello indoor maps can be used for integration with outdoor maps, as well as navigation and wayfinding.
OpenRouteService API: The API implements a route-finding service for cars, pedestrians, and bicycles based on Open Standards and Open Geodata. Coverage varies depending on data contributed. It also adds several location-aware services created from OpenStreetMap data: Geocoder/Reverse Geocoder, Directory Service, Accessibility Analysis Service, and Emergency Route Service. Please contact the providers prior to using the API. They are interested in spreading the usage of OpenRouteService in academic and non-profit projects.
SpatialStream API: The API provides a series of programming interfaces to simplify the integration of advanced spatial intelligence into existing applications. It creates a SaaS geospatial platform for developing location-aware information applications on top of common mapping platforms. The service was designed to facilitate the rapid development of embedded GIS and consumer mapping applications without needing to be a GIS expert. In addition to REST services, specialized client APIs are available to work with Google and Bing map controls.