Mozilla’s Firefox is the third most popular browser in the world, just behind Google Chrome and Internet Explorer. The browser is available in 75 languages and more than half of users employ non-English versions.

Firefox is unique, because it’s the only open source browser making all of its source code available to the public.

This has encouraged the creations of many add-ons made by non-employees allowing users to greatly customize their browser.

To mark the 10th anniversary of the open source browser, Mashable created a timeline with fun facts and notable accomplishments.

Rest here