26.4.0

PowerFox 26.4.0 is a major release that includes security and bug fixes, performance improvements, web compatibility enhancements, and new features.

Whats New

• Implemented support for Mac OS X 10.3 Panther. Builds are available for PowerPC G3, G4 7400, G4 7450, and G5 processors
• Implemented performance enhancements, correctness improvements, and crash fixes in the IonPower JavaScript JIT
• Implemented OpenGL acceleration on 10.4 builds. Acceleration is available on GeForce FX series or newer and Radeon 9500 series or newer
• Implemented 40+ AltiVec optimizations across the browser for improved performance on PowerPC builds
• Implemented GPU accelerated H264 decoding on 10.6 builds
• Implemented further SSE and AltiVec optimizations in H264, VP8, and VP9 decoders on all builds
• Implemented font sanitizer in 10.4 and 10.5 builds to load previously unsupported fonts and prevent crashes
• Implemented built-in uBlock Origin and h264ify extensions. Thank you to UCyborg, uBlock Origin developers, WindClan, and h264ify developers for their contributions
• Implemented refreshed browser about page
• Implemented KaiOS user agent option in PowerFox settings tab
• Fixed OpenGL acceleration for GeForce FX series GPUs
• Fixed various OpenGL rendering issues on 10.4 and 10.5 builds
• Fixed keyboard shortcuts and other input issues on 10.4 builds
• Fixed WebRTC issues on 10.5 builds
• Fixed video playback issues on 10.4 builds
• Fixed video playback issues on machines that do not support browser OpenGL acceleration
• Fixed WebGL issues on 10.5 and 10.6 Intel builds
• Fixed GitHub website issues through built-in Private Elements extension. Thank you to Private Elements developers for their contributions
• Fixed various browser UI issues
• Updated FFmpeg library to 7.1.5
• Updated NSS security library to 3.90.13 (UXP)
• Synced with UXP@ca36b1f452 for HTML, CSS, JavaScript engine improvements and security fixes
• Addressed security vulnerabilities: CVE-2026-16353, CVE-2026-16408, CVE-2026-16389 and many others that do not have a CVE designation.

Note

PowerFox now includes bundled add-ons (uBlock Origin, h264ify, and Private Elements) that improve user experience and web compatibility. While they are purely beneficial, they can be removed/disabled through about:addons.

Asset Information

powerfox-26.4.0-10.3-g3.zip - PowerPC G3 release for Mac OS X 10.3
powerfox-26.4.0-10.3-g4-7400.zip - PowerPC G4 (7400) release for Mac OS X 10.3
powerfox-26.4.0-10.3-g4-7450.zip - PowerPC G4e (7450/7447) release for Mac OS X 10.3
powerfox-26.4.0-10.3-g5.zip - PowerPC G5 release for Mac OS X 10.3
powerfox-26.4.0-10.4-g3.zip - PowerPC G3 release for Mac OS X 10.4
powerfox-26.4.0-10.4-g4-7400.zip - PowerPC G4 (7400) release for Mac OS X 10.4
powerfox-26.4.0-10.4-g4-7450.zip - PowerPC G4e (7450/7447) release for Mac OS X 10.4
powerfox-26.4.0-10.4-g5.zip - PowerPC G5 release for Mac OS X 10.4
powerfox-26.4.0-10.4-i386.zip - 32-bit Intel release for Mac OS X 10.4
powerfox-26.4.0-10.5-g4.zip - PowerPC G4 release for Mac OS X 10.5
powerfox-26.4.0-10.5-g5.zip - PowerPC G5 release for Mac OS X 10.5
powerfox-26.4.0-10.5-i386.zip - 32-bit Intel release for Mac OS X 10.5
powerfox-26.4.0-10.6-i386.zip - 32-bit Intel release for Mac OS X 10.6
powerfox-26.4.0-10.6-x86_64.zip - 64-bit Intel release for Mac OS X 10.6

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Thank you to everyone who has supported PowerFox's development! This browser would not have been possible without your help. If you would like to help with continued development, please consider supporting PowerFox, which lets me acquire hardware for development, research further improvements for the browser, and work on future projects.

26.3.0

PowerFox 26.3.0 is a major release that includes security fixes, performance improvements, and new features.

Whats New

• Implemented IonPower JavaScript JIT compiler for significant performance improvements on PowerPC builds
• Enabled Skia graphics backend for improved rendering performance on all builds
• Enabled WebRTC support for 10.5+
• Implemented automatic update notifications for all builds
• Implemented AltiVec optimizations in VP9 decoder for PowerPC builds
• Added PowerFox settings tab
• Fixed WebGL support for 10.5 Intel builds
• Fixed Cloudflare Turnstile issues
• Fixed various crashes on 10.6 builds
• Fixed keyboard shortcuts and other input issues on 10.4 builds
• PDF viewer improvements and bug fixes
• Stability improvements on 10.4/10.5 Intel builds
• Updated NSS security library to 3.90.12 (UXP)
• Synced with UXP@ddf5d6256e for HTML, CSS, JavaScript engine improvements and security fixes
• Addressed security vulnerabilities: CVE-2026-12318 (CWE-125), CVE-2026-12322, CVE-2026-12292, CVE-2026-4707, CVE-2026-4690, CVE-2026-4727, CVE-2026-2806, CVE-2026-2758, CVE-2026-2804, CVE-2026-2787, CVE-2026-2757, CVE-2026-2773, CVE-2026-2779, CVE-2026-2775, and several others that do not have a CVE designation.

Note

If you are migrating from 26.1.0, this build changes the location of the profile folder. Please rename ~/Library/Application Support/Basilisk to ~/Library/Application Support/PowerFox.

Asset Information

powerfox-26.3.0-10.4-g3.zip - PowerPC G3 release for Mac OS X 10.4
powerfox-26.3.0-10.4-g4-7400.zip - PowerPC G4 (7400) release for Mac OS X 10.4
powerfox-26.3.0-10.4-g4-7450.zip - PowerPC G4e (7450/7447) release for Mac OS X 10.4
powerfox-26.3.0-10.4-g5.zip - PowerPC G5 release for Mac OS X 10.4
powerfox-26.3.0-10.4-i386.zip - 32-bit Intel release for Mac OS X 10.4
powerfox-26.3.0-10.5-g4.zip - PowerPC G4 release for Mac OS X 10.5
powerfox-26.3.0-10.5-g5.zip - PowerPC G5 release for Mac OS X 10.5
powerfox-26.3.0-10.5-i386.zip - 32-bit Intel release for Mac OS X 10.5
powerfox-26.3.0-10.6-i386.zip - 32-bit Intel release for Mac OS X 10.6
powerfox-26.3.0-10.6-x86_64.zip - 64-bit Intel release for Mac OS X 10.6

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If you would like to help the continued development of PowerFox, please consider supporting the project, which lets me acquire hardware for testing and research further improvements. Thank you to everyone who has supported the project so far!

26.2.2

• Beta release for Mac OS X 10.4 Tiger
• Fixed instability on G3 systems

Thank you to everyone who has supported PowerFox!

Note

If you are running Mac OS X 10.5 or 10.6, please use their respective releases. Releases for 10.4/10.5/10.6 will be unified for the next release.

Asset Information

powerfox-26.2.2-g3-tiger-beta.zip - PowerPC G3 release for Mac OS X 10.4+
powerfox-26.2.2-g4-tiger-beta.zip - PowerPC G4 (7400) release for Mac OS X 10.4+
powerfox-26.2.2-g4e-tiger-beta.zip - PowerPC G4e (7450/7447) release for Mac OS X 10.4+
powerfox-26.2.2-g5-tiger-beta.zip - PowerPC G5 release for Mac OS X 10.4+
powerfox-26.2.2-i386-tiger-beta.zip - 32-bit Intel release for Mac OS X 10.4+

26.2.1 Tiger Beta

• Initial beta release for Mac OS X 10.4 Tiger

Thank you to everyone who has supported PowerFox!

Note

If you are running Mac OS X 10.5 or 10.6, please use their respective releases. Releases for 10.4/10.5/10.6 will be unified for the next release.

Asset Information

powerfox-26.2.1-g3-tiger-beta.zip - PowerPC G3 release for Mac OS X 10.4+
powerfox-26.2.1-g4-tiger-beta.zip - PowerPC G4 (7400) release for Mac OS X 10.4+
powerfox-26.2.1-g4e-tiger-beta.zip - PowerPC G4e (7450/7447) release for Mac OS X 10.4+
powerfox-26.2.1-g5-tiger-beta.zip - PowerPC G5 release for Mac OS X 10.4+
powerfox-26.2.1-i386-tiger-beta.zip - 32-bit Intel release for Mac OS X 10.4+

26.2.1 Intel 10.5 Leopard Beta

• Initial beta release for Intel Mac OS X 10.5 Leopard

Note

If you are running Mac OS X 10.6 Snow Leopard, please use the 26.1.0 release. 26.2.1 will be made available for Mac OS X 10.6 in the near future.

Asset Information

powerfox-26.2.1-i386-leopard-beta.zip - 32-bit Intel release for Mac OS X 10.5+

26.2.1 PowerPC Beta

• Beta release for PowerPC Mac OS X 10.5 Leopard
• Fixed OpenGL acceleration on ATI X1000 series GPUs
• Fixed black window issue on GeForce FX series GPUs
• Fixed crash on launch on non-QECI GPUs (i.e. Radeon 9200, GeForce 4MX, etc.)
• Fixed blue hue on videos when the browser is running without OpenGL acceleration

Note 1

This build changes the location of the profile folder. Please rename ~/Library/Application Support/Basilisk to PowerFox.

Note 2

The browser is internally numbered 26.2.0. This will be correct for the next release.

Asset Information

powerfox-26.2.1-powerpc-beta.zip - PowerPC release for Mac OS X 10.5+

26.2.0 PowerPC Beta

• Initial beta release for PowerPC Mac OS X 10.5 Leopard

Asset Information

powerfox-26.2.0-powerpc-beta.zip - PowerPC release for Mac OS X 10.5+

26.1.0

• Initial Release

Asset Information

powerfox-26.1.0-i386.zip - 32-bit Intel release
powerfox-26.1.0-x86_64.zip - 64-bit Intel release
powerfox-26.1.0-base-src.zip - Source code for the base tree
powerfox-26.1.0-platform-src.zip - Source code for the platform tree