Firefox 21.0 Download

On This Page Download Mozilla Firefox 21.0 is a fast, full-featured Web browser that makes browsing more efficient than ever before. This version of the Firefox web browser is dramatically redesigned to be faster, easy to use, customizable and private. Firefox is also the only major browser backed by a not-for-profit fighting to give you more openness, transparency and control of your life online. Firefox for Android browser gives you effortless privacy protection with lighting-fast page loads.


  • Major differences.
  • Web technologies support.
  • Cross-platform support.
  • Aero Peek capability.
  • Security.
  • Tabbed browsing.
  • Pop-up blocking.
  • Private browsing.

Please Note: we only post download links from this site that are known to be 100% malware, spyware and adware free.

System Requirements:

  • Operating Systems: Windows 7, Windows 8, Windows Vista, Windows Server 2003 SP1, Windows XP SP2.
  • Pentium 4 or newer processor that supports SSE2.
  • 512MB of RAM.
  • 200MB of hard drive space.
  • Pango 1.14 or higher.