Free and Open Source Geospatial Technologies

A categorized list of popular free and open source tools for geoinformatics.

Table of Contents

• APIs
• Databases
• Geographic Information Systems
• Spatial Analysis
• Visualization
• Web Mapping

Tools

APIs

• Amazon Maps API v2 - Add interactive 3D maps, graphics, and custom overlays to your Fire Tablet and Fire phone apps.
• Bing Maps - Bing Maps platform provides multiple API options for your application.
• CartoDB - Allows you to generate maps based on data hosted in your CartoDB account.
• CityGrid - Enables developers to create web and mobile applications that find local businesses, organizations, and points of interest by a variety of search criteria.
• CountryAPI - Gets all the countries, and obtain the most important information of these.
• Daum Maps API - Daum Maps provide multiple APIs for Korean map.
• DigitalGlobe - DigitalGlobe Maps API delivers the world's best satellite imagery, straight to your app. #Beta
• Factual - Providing a places search that can be searched by latitude/longitude, and "where" using full text search query string.
• Foursquare Venue - Providing a places search that can be searched by hierarchical list of categories, longitude/latitude etc.
• Google Maps API - Google Maps APIs are available for Android, iOS, web browsers and through HTTP web services. Clients can be found here.
• Google Places API - Providing a places search that can be searched by latitude/longitude, keyword matched against all fields, name of place, type of place restricted by radius.
• HERE Maps API - Wide range of APIs available through JavaScript, iOS, Android, or REST services.
• Mapbox - Access to MapBox's API.
• Naver Maps API - Naver Maps provide multiple APIs for Korean map.
• Nokia - Providing a JavaScript places search that can be searched by search term, with a detail search for display by JS widget.
• Open Street Map - API access to OSM.
• Resource Watch - Free geospatial datasets about the world's resources. Explore the datasets visually here.
• Scribble - The Scribble Maps API is a cross browser, mobile ready, HTML5/JavaScript, interactive map builder.
• Yahoo Maps - Yahoo Maps lets you easily embed rich and interactive maps using your choice of platform.
• Yandex - API for installing Yandex.Maps and the necessary tools for working it on your web app or site.
• Yelp - You can search location using longitude and latitude, neighborhood, address or city and filter listings by “where”, using a list of support categories.

Databases

• Mongo DB - mongoDB is ideal for developers who want precise control over the final results and processes for handling Big Data.
• PostGIS – PostGIS is a spatial database extender for PostgreSQL object-relational database. It adds support for geographic objects allowing location queries to be run in SQL.

Geographic Information Systems

• QGIS – A free and open source Geographic Information System.

Spatial Analysis

• R - Free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS.

Visualization

• d3-geo - Geographic projections, spherical shapes and spherical trigonometry in D3 visualization language.
• Google Charts - Free tool with a wide range of capabilities for visualizing data from a website.

Web Mapping

• Leaflet.js - An open-source JavaScript library for mobile-friendly interactive maps.
• OpenLayers - An open-source JavaScript library for displaying map data in web browsers as slippy maps.

Credit

The structure of this repository is inspired by abhishekbanthia's list of public APIs.