The last SeaMonkey to work on the old OSX 10.4+ was SeaMonkey 2.0.14 SeaMonkey 2.0.14 has a Gecko version of 1.9.1.19 which is same as Firefox 3.5.19. There was no SeaMonkey based on Gecko 1.9.2.x which is what Firefox 3.6.28 was based on as was the last Firefox release to work on OSX 10.4+. Firefox 4.0 based on Gecko 2.0 required OSX 10.5+ at min so SeaMonkey 2.1 (based on same gecko as Firefox 4.0.1) and newer will not work. The TenFourFox option you have (based on Firefox 24 ESR with 24.2.0 being current and not 24.0 that you have) is much more up to date security wise compared to the ancient SeaMonkey 2.0.14 released back in April 2011.
Firefox For Mac 10.6.8
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Firefox For Os X 10.8.5
Oct 04, 2011 Am currently on a Mac 0S X 10.4.11, using Safari 3.1.2 Before the upgrade I played regularly in Live with no issues. Staff suggested using Safari 5.0.4 but this is not compatible with 10.4.11, it's only compatible with the Intel Macs. Best browser for old mac. How do I download firefox for Mac 10.4.11? I have tried to download 3.6 and it won't download. I have a Mac OS X version 10.4.11 with safari version 4.1.3. How can I upgrade the safari on my computer. Under the Apple heading and upgrades it says there are no upgrades available.