There’s been no Mac G4-optimized Firefox builds of the latest Firefox security release from the usual sources. (new priorities.) But I located one here.
Six Apart: “Later this year the open source version of [ ] Movable Type will be released under the GPL license.”
Are these noticeably faster? Last time I tried all I got was a bunch of crashes on my G4. But that was early in the days of the G4-optimized builds.
It did seem faster when I first installed it, but I haven’t tried the official release in awhile.