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What are the top used versions of Desktop/Tablet/Mobile "Mozilla Firefox" browsers world wide

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I am a Test Engineer, I need a data which has list of top used versions of Desktop/Tablet/Mobile "Mozilla Firefox" browsers world wide for analysis.

I am a Test Engineer, I need a data which has list of top used versions of Desktop/Tablet/Mobile "Mozilla Firefox" browsers world wide for analysis.

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The most used versions are the latest versions, plus the one before it. So right now, Firefox 40 and 39 are the most used versions. We release updates every 6 weeks, so this will change in a few weeks time.

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If it is critical to your business to support users of older versions of Windows and Mac, you might also want to test:

  • Mac OS X 10.5 => Firefox 16 is the highest version that runs (Oct 2012)
  • Windows 2000 => Firefox 12 is the highest version that runs (Apr 2012)
  • Windows Server 2003 => Firefox 12 is the highest version that runs (Apr 2012)
  • Windows XP without SP2 or SP3 => Firefox 12 is the highest version that runs (Apr 2012)