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TenFourFox is a fast, efficient Web browser always based on the current version of Firefox, but unlike the main distribution TenFourFox is compatible with OS X 10.4 and 10.5 running on PowerPC processors. It comes in different tuned versions for specific PowerPC processor families:

What's New

Version 45.10.0 (Feature Parity Release 1 [FPR1]):

Note: The 'Download' link yields the G5 version of TenFourFox. Additional downloads can be found in the Description.

  • Now an independent evolving fork of Firefox.
  • Additional support for ECMAScript 6 and ECMAScript 7 JavaScript features.
  • Support for Brotli compression over HTTPS.



  • OS X 10.4.11 or later

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TenFourFox User Discussion

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3.8 73


Current Version (45.x)


Downloads 49,963
Version Downloads 163
License Free
Date 20 Jun 2017
Platform OS X / PPC 32
Price Free
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