My favorite browser for Snow Leopard is InterWeb.
It was just updated 2/17/2021, supports add-ons such as ublock origin , no-script etc., and really flies with foxpep added.
A blog about Tiger, Leopard, Snow Leopard and PowerPC Linux.
randommacstuff.blogspot.com
The Firefox Partitioned Engine Patch, officially abbreviated as foxPEP, is a finely tuned all-in-one preferences patch designed exclusively for Firefox-based browsers that automatically applies a number of advanced under-the-hood configurations to achieve a superior Web browsing experience on...
forums.macrumors.com