Trianglify is a javascript library for generating colorful triangle meshes that can be used as SVG images and CSS backgrounds. It was inspired by btmills/geopattern, and uses d3.js to build the polygons and SVG and SVG filters for rendering. It also includes the colorbrewer color palette library to get you up and running quickly.
Requirements: JavaScript Framework
Demo: http://qrohlf.com/trianglify/
License: GPL v3 License