Waterfox is a high performance browser based on the Mozilla platform

Waterfox for Mac

Waterfox G6.6.9

  -  170 MB  -  Open Source

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Waterfox G6.6.9.


For those interested in downloading the most recent release of Waterfox for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Why is this app published on FileHorse? (More info)
  • Waterfox G6.6.9 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Waterfox G6.6.9 Screenshot 1
  • Waterfox G6.6.9 Screenshot 2
  • Waterfox G6.6.9 Screenshot 3
  • Waterfox G6.6.9 Screenshot 4

What's new in this version:

Security:
- Fixed multiple security vulnerabilities as described in Mozilla Foundation Security Advisory 2026-15
- Fixed 3 CVEs in the JPEG-XL image decoder

Fixed:
- Certificate reliability improvements: Fixed an issue that could cause "Unknown Issuer" certificate errors on certain sites, most commonly on Linux. Waterfox now refreshes intermediate certificate data as needed to keep HTTPS sites loading securely. No new browsing data is collected; Waterfox may contact Mozilla's certificate update endpoints to fetch missing intermediate certificates and revocation data.

Performance:
- Small performance improvement in JPEG-XL image decoding (improved LUT loading and added RGB offset dithering)

Experimental:
- Ogg Theora support can be re-enabled by setting media.theora.enabled to true in about:config. ?? Use with caution as enabling Ogg Theora may have security concerns.