Firefox is a free, open-source web browser for Windows, Linux and Mac OS X and is based on the Mozilla codebase. It is small, fast and easy to use, and offers many advantages over Internet Explorer, such as the ability to block pop-up windows.
FirefoxPRO.net contains tons of extension/themes with direct download. Not just online mirror of addons.mozilla.org! It's a community of PRO users!
Happy Tweaking!
