Create Data Maps and Visualizations for FREE with Datamaps is a free tool that allows you to create visualizations with data maps. You upload a CSV file with region data, customize your map’s appearance, and then save it as a PNG or SVG.

The main app is free to use and if you’d like to run your own version the full source code is on GitHub. It’s tech stack is React, Redux, d3, Node with Express, and CSS-Modules.