The second most popular web browser, after Google Chrome (21% market share as of June 2015), which is quite impressive for an open-source project born from the battered corpse of Netscape after it was defeated by Internet Explorer, then stripped and eaten by AOL. Mozilla Firefox, or just Firefox, was launched on November 9, 2004. Versions 2, 3, and 4 came out in 2006, 2008, and 2011, after which they changed the criteria for being a new version and they started to roll out faster. As of July 2015, 39.0 is the official released version for desktops.

Firefox is mostly known for being hugely and relatively easily customizable through the use of add-ons and scripts.

For more detailed information, see its [[http://en.wikipedia.org/wiki/Mozilla_Firefox page]] on [[TheOtherWiki the other wiki]]. The browser's official webpage can be found [[https://www.mozilla.org/en-US/firefox/new/ here]]. In addition to the desktop version, Mozilla has also released a mobile version for the Android operating system, which can be downloaded from the Google Play store.

You don't actually have to be able to think in Russian to use it, though you might think so if you confuse the browser with [[Film/{{Firefox}} the 1977 novel or its 1982 Clint Eastwood film adaptation]].