TenFourFox

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:

• TenFourFox G5
• TenFourFox G4 - build 7450
• TenFourFox G4 - build 7400 (also for 7410)
• TenFourFox G3

If you feel unsure what type of PowerPC processor your Mac has, go to the Apple menu and choose "About this Mac" and check the processor field. On the G4 Mac open the Terminal app (in Applications -> Utilities) and type the command machine.

TenFourFox no longer supports plugins or Flash - As of the previous TenFourFox 6.0, for the following reasons plugin support ships disabled. Sites will now act as if no plugins were installed at all. Plugins on PowerPC are of special concern because Mozilla is making updates to their plugin architecture which may require the plugins themselves to be updated, and there are certain difficult-to-correct bugs with them already on Tiger. Most importantly, Adobe Flash for PowerPC is no longer maintained and has known security risks that can crash or leak data, some sites require versions not available on the PowerPC, and QuickTime for Leopard will lose its own support with the release of OS X Lion. For these and other reasons, TenFourFox does not run plugins, and they cannot be enabled.

• Support for basic adblock (issue 469), allowing the browser to block many nuisance ads, tracking scripts, cryptominers, adblocker-blockers and other JavaScript-based malware without an add-on. This reduces memory usage, improves browser performance and enhances your privacy and security. If you are using an adblocker add-on, you can continue to do so for additional protection, or disable and remove the add-on and use basic adblock by itself for improved performance. Basic adblock is not enabled by default and is not intended to comprehensively block all advertising content. Read more about how TenFourFox basic adblock works.
• Re-tuned garbage and cycle collection intervals for improved performance (issue 483).
• Additional DOM and JavaScript feature support (issue 485, issue 488).
• Additional HTTPS/TLS cipher support (issue 480, issue 489), improving connection security and fixing Amtrak and certain other sites.
• Multiple improvements to HTML, CSS, DOM and JavaScript standards compliance and performance (issue 399, issue 482, issue 493).

Fixed

• All relevant security and stability fixes from Firefox ESR 52.8.0 (issue 491).
• A regression causing crashes in complex JavaScript sites has been repaired (issue 495). This bug was first introduced in FPR6.
• A bug in DOM keyboard events support was repaired (issue 497), restoring keypress detection for certain sites and JavaScript applications.
• Updated user agent strings for current versions of iOS, Firefox ESR and Android (issue 492).
• Favicons from certain sites such as SourceForge no longer corrupt the Bookmarks and History menus (issue 484). Note that these otherwise unrenderable icons now simply appear blank.
• Improved performance and additional fonts added to the ATSUI font blacklist (issue 492), fixing Nerdwallet.
• RC4 ciphers and SPDY/3.1 are now officially deprecated and disabled by default, and they may be completely removed in a future version of the browser.