An open-source XML/HTML browser which is implementing full Level 2 DOM support. The Firefox Browser was created to help simplify and speed up the user's browsing experience. Being Open Source, users can personlaize their browsing experience by choosing from over a thousand useful add-ons that enhance Firefox. Firefox is an open source development process driven by thousands of passionate, experienced developers and security experts spread all over the world. Firefox became popular for their tabbed browsing feature. The Search bar comes pre-loaded with search engines for Google, Yahoo!, Amazon, eBay, Answers.com, and Creative Commons. In recent years, Firefox has continued to gain market share from the leader Internet Explorer browser from Microsoft.