Kalen interviews Kevin on Magium and his configuration management tool. Kevin shreds on his electric guitar while they talk open source - what more could you ask for.
A PHPUnit/Webdriver (Selenium (there for SEO)) based test framework for streamlining browser testing with Magento. It basically boils down to building out reusable Web Driver commands for Magento allowing you to bypass much of the boilerplate code that browser/functional testing may require. This is done through utility classes.