Modest Maps

Modest Maps is a small Javascript library for interactive tile-based maps that can display maps from external sources (e.g. OpenStreetMap, but not commercial layers like Google Maps), enable panning and zooming, and track the position of points based on XML data. It is designed to be lightweight and offer a minimal set of features, and therefore has less functionality than Leaflet, a similar tool.


OpenLayers is a Javascript library that can display map tiles and markers loaded from any source in web browser. It provides an API for building rich web-based geographic applications.


CartoDB is a cloud based mapping, analysis and visualization engine that lets users build spatial applications for both mobile and the web. Users input tabular data and then construct an interactive visualisation through the web interface. It provides automatic georeferencing functionality and provides APIs for mobile data collection and dissemination.

Use is free for up to five tables; after that, there are monthly pricing plans.
Development was funded through EU and Spanish research programmes.