Mozilla Firefox is a free and open source web browser descended from the Mozilla Application Suite and managed by Mozilla Corporation.
As of January 2012, Firefox has approximately 25% of worldwide usage share of web browsers, making it the second or the third most widely used browser, according to different estimates. The browser has had particular success in Germany and Poland, where it is the most popular browser with 52% usage and 45% respectively.
The Web is all about innovation, and Firefox sets the pace with dozens of new features to deliver a faster, more secure and customizable Web browsing experience for all.
User Experience. The enhancements to Firefox provide the best possible browsing experience on the Web. The new Firefox smart location bar, affectionately known as the “Awesome Bar,” learns as people use it, adapting to user preferences and offering better fitting matches over time.
Performance. Firefox is built on top of the powerful new Gecko platform, resulting in a safer, easier to use and more personal product.
Security. Firefox raises the bar for security. The new malware and phishing protection helps protect from viruses, worms, trojans and spyware to keep people safe on the Web.
Customization. Everyone uses the Web differently, and Firefox lets users customize their browserwith more than 5,000 add-ons.
Note: You can also upgrade by going to Firefox button > Help > About Firefox and click “Apply Update”.