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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 in TenFourFox

Version 45.20.0:
  • Additional JavaScript ES6 and ES7 features and performance improvements
  • All relevant security and stability fixes from Firefox ESR 60.4.0.
  • data: URIs are now opaque-origin, reducing XSS risk. A shim is in place to maintain add-on compatibility.
  • For performance, CSS error reporting is now disabled by default in

Requirements for TenFourFox

  • OS X 10.4.11 or later
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TenFourFox User Discussion

3.8 78
Current Version (45.x)
Downloads 53,239
Version Downloads 319
License Free
Date 12 Dec 2018
Platform OS X / PPC 32
Price Free
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