vbench is a super-lightweight Python library for running a collection of performance benchmarks over the course of your source repository’s history. Since I’m a GitHub user, it only does git for now, but it could be generalized to support other VCSs. Basically, you define a benchmark.
http://wesmckinney.com/blog/?p=373

Paper.js is an open source vector graphics scripting framework that runs on top of the HTML5 Canvas. It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface.
http://paperjs.org/about/