Firefox

Firefox is a free web browser with over 200 million users. The layout is thought by many to be simpler and better than Internet Explorer.

Search Bar
Firefox comes with a built-in search bar capable or searching: -Google -Yahoo! -Amazon.com -Answers.com -Creative Commons -Ebay -And more! The search bar is fully customizable and is easy to use.

Problems
One of the main problems people find in Firefox is that it is not always compatible with everything Internet Explorer is. However, Firefox is always in development and is completely ad-free.