Mozilla put of a lot of resources into creating a simple but effective UI aimed at making browsing quicker and easier. The browser is particularly popular with developers thanks to its open source development and active community of advanced users. The key features that have made Mozilla Firefox so popular are the simple and effective UI, browser speed and strong security capabilities.

Although the browser's market share is lower for OS X, it is still one of the most popular browsers available on the Mac platform.

Since then, Mozilla Firefox has consistently featured in the top 3 most popular browsers globally. At its public launch in 2004 Mozilla Firefox was the first browser to challenge Microsoft Internet Explorer’s dominance. Mozilla Firefox is a fast, light and tidy open source web browser.