I found a version of TenFourFox that has the moniker "7450" which you can find in their historical releases https://www.floodgap.com/software/tenfourfox/. I wasn't expecting it to work and then it just did.
That's surprising! I'm a big fan of Tiger and that era of Apple hardware (I have another project in mind to cram a TB of storage into an iPod Mini) though it's a wonder that TenFourFox went on as long as it did really. Maintaining something as complex as a modern web browser for long-obsolete hardware sounds like a gargantuan task, I'd love to be involved in keeping it going but I think it'd be above my ability to meaningfully contribute to.
