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Firefox Beta 66.0b4

Mozilla's popular open-source web browser - beta channel.


Firefox Beta contains the latest features of Mozilla's popular open-source web browser. The feature set for Firefox rivals all the top browsers available. Features include tabbed browsing, spell check, incremental find, live bookmarking, Smart Bookmarks, a download manager, private browsing, location-aware browsing and an integrated search system. There are also thousands of third party extensions built for Firefox to add even more capabilities.


Release Notes


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  • Maintained By

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  • Actions

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  • Dependencies
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  • Used By
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  • Website
  • Current
    70.0b12 updated 4 months ago
  • Details
    Size: 162.38 MB
    Buffer Size: 148.22 MB