Mapsense

The Mapsense API allows developers to insert vector maps into their websites. This service is based on the Polymaps API and uses D3 for handling drawing and selection. Tiles are generated dynamically upon request, which means that users control exactly which features and properties are returned. With Mapsense, users are able to create interactive, data-driven maps using rich vector map data.

boundaries.io

US Zip Code, County, City, and State Boundaries API: A simple API that will allow you to integrate multiple GeoJson US boundaries results into your apps and systems.

MasterCard Places

MasterCard Places API lets developers build applications using its location intelligence services, and by integrating its dataset. This API allows developers to have access to locations of different places across the US. The Places API is powered by "near-real-time, aggregated, anonymous transaction data."

Dansk Supermarked

The Dansk Supermarked API is a Danish Web API that provides geocoded store information. This includes store resources such as basic information, location, and hours for Dansk Supermarked stores: Netto, Føtex, Bilka and Salling in Denmark, Sweden, Germany, Poland and UK. The API also can provide information for in-store events and can overall enrich applications with Dansk store data.

GeoKoala

Using the GeoKoala API one can store GeoData/ GeoJson to GeoKoala's servers. Developers can then integrate this API into applications, Augmented Reality browsers, and major Geo Clients (such as GoogleEarth, and GPX clients). Data is stored in MongoDB. It is free and provides a unique set of tools for users to try.

University of Alicante Open Data

UAPI is an open data API for data reuse. UAPI provides a wealth of university data for study, research or reuseand for assisting in development of mashups and different apps. This public API is part of the project OpenData4U developed by the University of Alicante and the Vice-Rectorate of Information Technologies with the goal of opening university data to society.

Active Golf Tee Time

The Goft Tee Time API lets developers integrate their applications with its tee time database. With the API integrated, users of the applications will have access to tee time inventory and rates available on ActiveGolf.com. Users will be able to search for and present tee times and rates from courses throughout North America.

Photon

Photon is an OpenStreetProject made by Komoot that lets users to geographically locate the places they enter on the Photon platform. The Photon API lets developers to integrate this feature into their applications for use. The API uses GeoJSON format, and is free for use.

One.Stop.Transport

The One.Stop.Transport platform (OST) is a platform for open data aggregation, transformation and delivery, following modern Open Data principles, standards and directives. The type of data the OST currently manages includes transportation (mass transit), traffic data (highways), points of interest and territory (mainly OSM), which are all open data. The data APIs support static and real-time data, although data providers currently contribute with static data only.

aboutPLACE

The aboutPLACE RESTful API allows developers to integrate place-based data into interactive maps. The API is in Beta, with data available for Austin, Texas; Boston, Massachusetts; and Miami, Florida. aboutPLACE requires an API Key which is available after creating an account. With the API developers can access local analytics, metrics, maps, visuals, and other insights about cities allowing them to highlight specific datasets and provide hyper-localized results.