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Waterfox Logo.png
Original author(s) Alex Kontos
Slogan The fastest 64-bit variant of Firefox on the web.
Stable release 34.0.1 / 17 December 2014; 0 days ago (2014-12-17)
Development status Active
Operating system Windows, OS X
Engine Gecko
Platform x86-64
Type Web browser
License Mozilla Public License
Website www.waterfoxproject.org

Waterfox is an open-source web browser based on Mozilla Firefox, for 64-bit Windows and OS X systems. As there is no official 64-bit version of Firefox for Windows, Waterfox may be used as an alternative.[1] According to the developers, Waterfox is geared towards speed. It is compiled using the Intel C++ Compiler, and uses Intel's Math Kernel Library, Streaming SIMD Extensions 3 and Advanced Vector Extensions. It is compatible with Firefox add-ons and 64-bit NPAPI browser plug-ins.[2] Although Firefox outperformed Waterfox in Peacekeeper browser benchmark tests ran by TechRepublic in 2012,[3] Waterfox showed a mild improvement over Firefox in tests run by Softpedia in 2014.[4] Benchmarks are also available on the developers website run on the system Waterfox is built on.[5]

To date Waterfox has over 3,000,000 downloads, spanning 180 countries.

Originally developed by Alex Kontos, Waterfox was presented at an event called “Pitch at the Palace”[6] at St James Palace for HRH The Duke of York and has since attracted interest from Andrew Crossland (one of the attendees).

See also[edit]


  1. ^ Noyes, Katherine (27 December 2011). "Use a 64-Bit PC? Instead of Firefox, Try Waterfox 9.0". PC World. Archived from the original on 25 September 2012. 
  2. ^ "Waterfox". Retrieved 20 October 2013. 
  3. ^ Nawrocki, Matthew (20 April 2012). "Review: Firefox's unofficial 64-bit variant Waterfox". TechRepublic. Archived from the original on 29 July 2013. 
  4. ^ Opris, Elena (6 June 2014). "Waterfox 28 Review – A 64-Bit Version of Firefox". Softpedia. 
  5. ^ "Waterfox Benchmarks". Waterfox Project Website. 1 August 2014. 
  6. ^ "Pitch @ Palace Bootcamp". The Duke of York. 10 November 2014.