The PHP 5.4 MVC with Shoes On: ActiveRecord, User/Session, Generators, SCSS, (Twitter Bootstrap) Integration, Workers, Cron Management, Image Manipulation, Caching, Git Management, Mail & Mail Parsing, OCR, Scraping, Selenium, Mustache, Markdown, Phone & Text Messaging, WebSockets, BitTorrent and much more!
http://ericlondon.com/posts/251-headless-selenium-testing-in-php-and-ruby-on-ubuntu
using chromedriver by default should speed this up and reduce memory footprint