TileMill is an application for making beautiful maps. Whether you’re a journalist, web designer, researcher, or seasoned cartographer, TileMill is the design studio you need to create compelling, interactive maps.

TileMill is built on a suite of modern open source libraries including Mapnik, node.js, backbone.js, express and CodeMirror. Every map you make in TileMill is mobile ready. By leveraging the portable, fast MBTiles format, each TileMill map looks and works great on the web and offline.

You can enrich your maps with hover tooltips and clickable pop ups. Reveal details in your data by embedding numbers, graphs, and images into your map. TileMill leverages UTF-8 grid technology allowing you to leverage interactivity for hundreds of thousands of data points while maintaining high performance.

Requirements: -
Demo: http://mapbox.com/tilemill/
License: License Free