A myriad of reasons explain why Firefox is becoming increasingly more popular:
RSS reader—Firefox has a built-in RSS reader which allows users to stay up to date with the content of their favorite blogs and Websites;
Better security—Firefox has proven more secure than Internet Explorer for a few reasons, but primarily because the majority of hackers prefer to target the most commonly used browser, namely Internet Explorer;
Integrated search bar—Firefox users have quick and easy access to their favorite search engines such as Google and Yahoo;
Customizable—Unlike most browsers, Firefox allows numerous options to personalize both its appearance and functionalities;
Find as you type—Firefox automatically highlights the first result of a search as you start to type it. If you frequently search the content of Web pages, this feature can save you quite a bit of time;
Tabbed browsing—Arguably one of the most important reasons behind Firefox’s popularity is that it offers tabbed browsing. In other words, you can navigate several sites in a single page as well as drag and drop tabs to keep sites together;

Firefox Extensions

Another key advantage of using Firefox is that it allows the use of numerous extensions. If you are not familiar with extensions, they are add-ons that provide the browser with new functionalities. There are literally hundreds of extensions, but here are a few well-known and popular ones to illustrate the numerous possibilities that Firefox extensions have to offer (for a complete list check out
No Script—Makes your browser more secure by allowing JavaScript, Java, and other executable content only for trusted domains of your choice, e.g. your home-banking web site;
Video Downloader—allows users to download videos from Youtube, Google, Metacafe, iFilm, Dailymotion, and other video sites;
DownThemAll—This extension is a download manager that features an advanced accelerator that increases speed up to 400% and allows users to pause and resume downloads at any time;
MacFox—Let’s PC users experience the look of Mac OS X. This extension includes Aqua-style UI elements and enhancements.