PowerFox - new web browser for Leopard on PowerPC!

Jazzzny

Tinkerer
Feb 2, 2026
28
50
13
Picture 10.png


This still has a few issues, but I've made very good progress towards getting Skia working on PPC, which results in much faster browser compositing compared to the CoreGraphics backend. For comparison, the cross dissolve on the main image of https://powerfox.jazzzny.me/ finishes around twice as fast! Hopefully this will be functional on 10.4 too, but it seems like the next release is shaping up to be a very nice one.
 

Jazzzny

Tinkerer
Feb 2, 2026
28
50
13
Hello everyone,

I'm happy to announce the release of PowerFox 26.3.0! This release includes the IonPower JIT for substantial JavaScript improvements, and many new features, improvements, bug fixes, and security fixes:

  • 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.
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!

As always, you can download the latest release from powerfox.jazzzny.me or the GitHub. Enjoy!
 

Chris Trusch

New Tinkerer
Jun 26, 2026
1
0
1
Excellent work, the PPC JIT works nicely. I see one minor font rendering issue on 10.5 – is there a place to report/track this?