OpenCage Geocoder

OpenCage Geocoder combines multiple geocoding systems and lots of open data to provide geocoding and reverse geocoding services that cover the entire world. Users are free to display geocoding results on any type of map and even use those results for commercial purposes. The OpenCage Geocoder API does not currently support bulk geocoding, but users are encouraged to request it if they want it.

Clickslide Datadipity

Datadipity allows users to combine APIs from multiple sources into a ready-to-use JSON API which can be used with any Javascript Library. It also creates an XML API endpoint with the mashup for connecting to app servers. Datadipity can integrate any API into the system with a simple form based tool. Users have the ability to restructure APIs as they please, allowing them to unify multiple APIs into a standardized format. Mashups or restructured APIs can be published for others to see or kept private.

GeoApps.co

GeoApps.co is an API for geocoding and reverse geocoding Colombian addresses. Developers can integrate the ability to derive addresses from geographic coordinates (and coordinates from addresses) into their own web, mobile, or desktop applications using this API. The website is provided exclusively in Spanish.
GeoApps.co

Mapillary

Mapillary uses crowdsourced photos to map different parts of the world. Users can take photos with their mobile devices and upload the photos to the Mapillary website. Mapillary is currently in public Beta. The Mapillary API allows users to use latitude and longitude coordinates to search for and retrieve information on images and sequences of images.
Mapillary

Pingeborg

"Project Ingeborg" (pingeb.org) is designed to promote local artists using samples of their work. Artists can put up stickers or flyers with QR codes on them that passers-by can scan using the Pingeborg app on their mobile devices. This will open a link to iTunes, Amazon, or the artist's mobile website. Users can query information on QR codes that have been used to tag objects and any downloads associated with them using the RESTful API.
Pingeborg

Ancient World Mapping Center

The Ancient World Mapping Center is an interdisciplinary research center located at the University of North Carolina at Chapel Hill. The Center promotes cartography, historical geography, and geographic information science within the field of ancient studies through research, teaching, and community outreach activities. The AWMC API allows users to browse, access, and interact with the AWMC database. The API uses RESTful calls and responses are formatted in GeoJSON and RDF.
Ancient World Mapping Center

Open North Represent

Open North is a service that allows users to enter a Canadian address or postal code to find their elected representatives. The Open North Represent API provides REST-based access to a wealth of information about Canadian elected officials and electoral districts. It includes all Members of Parliament, all members of provincial legislatures, and municipal elected officials for 39% of the Canadian population.
Open North Represent

MapBox

Mapbox is a suite of open source mapping tools. This API can be used to create interactive maps using a wide range of file formats and databases. It also allows users to host their maps so that they can be embedded on webpages and shared with a wider audience. All maps created using Mapbox are compatible with Android and iOS devices.

EEA Discomap

The European Environment Agency (EEA) provides the public with GIS APIs to get a wide range of environmental data for Europe and helps you create your own map-services. As of today EEA covers the thematic areas such as Air, Water, Biodiversity, Land and Noise. More topics will be added. Services exposed from discomap.eea.europa.eu are allowed to be re-used by anybody. EEA content can be integrated in many different ways by developers or by any end-user who might find an interest in combining EEA's information with their own or other public map-services (mashups). As of today EEA covers the thematic areas such as Air, Water, Biodiversity, Land and Noise. We support access of these service to as many possible ways EEA can handle. All these map-services have meta data and a simple interface that allows you to discovered. These map-services are exposed in many other portals such as the INSPIRE portal, ArcGis.com, GEOS and many other. EEA gives anybody the rights to re-link these services into there own web-site or portals. EEA however only maintains it's meta data from the services hosted in this infrastructure.

Yandex Maps

Yandex is the largest search engine in Russia and develops a number of Internet-based services and products. Yandex offers owners of websites and blogs tools with which they can apply the functional services of Yandex in their projects. The site and documentation are in Russian. <br> <br> The Yandex Maps API is a free tool that allows developers to embed maps on their website. Using the API users can manage cards and their contents, as well as create a variety of applications - from simple interactive directions to the office to advanced GIS services. The API uses both REST and JavaScript protocol and returns a map image based on specified parameters.