https://www.floodgap.com/software/tenfourfox/
https://tenfourfox.blogspot.com/2020/04/the-end-of-tenfourfo...
Some 12 years ago I had to order a new motherboard and at that time all I had at hand was some old eMac. I'm not sure if it had 512MB or 1GB of ram installed by previous owner but browsing the Internet was tiresome. Still, both that chunky white boy and TenFourFox managed to help me and I've purchased that mobo.
https://www.basilisk-browser.org/features.html
Basilisk supports the technologies required for the modern web, while deliberately avoiding the rapid architectural and interface changes common in mainstream browsers.
Nothing but very vague and useless marketing-speak.
PowerFox is both standards compliant and feature-rich, supporting the latest web technologies to ensure compatibility with modern websites.
which means.. next to nothing. No "PowerFox version X has (at least) the same web standards support as Firefox Y".
it likely has code from newer versions spliced in
That's a good thing, but making it clearer what to expect will make it easier for potential users to decide whether to give it a try.
There are not that many options for the potential users.
I might download and give this a shot
But, I do wonder what the browsing experience is like. It was rough using Firefox back on Mac's in the mid 2000's and the internet has only gotten significantly more data heavy since.
Anything less than a G5 would be difficult to deal with.
The G5 was actually the last Mac I owned until buying a Neo just for giggles.
PowerFox has tweaks especially for Leopard and Snow Leopard and Mac-quality of life features. You can also try Basilisk, which is the upstream version without those tweaks.
Momiji is another variant targeting Mac OS Mavericks and other targets with ESR Firefox fixes. Works pretty well!
Finally, there is work being done to revive Safari for Mavericks and work to bring Netsurf to MacOS 9.