Livin' on the edge with optimized, beta Firefox builds

I use the Webkit nightlies on the production machine at work and find surprisingly few crashes. I spend all day on the same pages so maybe that influences the results but I really appreciate the speed increase. The only time I leave it is to use IE only features in Sharepoint. Now if someone could fix that for me ...

Very handy the way Webkit keeps safari bookmarks etc as well

A very good "middle of the road" approach on this in my experience is to join ADC (visit developer.apple.com) and get a free membership which will entitle you to download the easily uninstallable Safari 4 developer preview builds which have most of the stuff that adds all that zip into Webkit with a bit more stability (I used Webkit nightlies a lot and found ways to crash it enough without trying that I this would work better for me and it did).

I've been using Minefield (ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk/) on my Macbook running 10.5.6, and have had almost no problems at all. The majority of the time, I have had no problems...every once in awhile the browser will be unresponsive, but that's easily fixed by closing the window and re-opening. Most of my plugins work with it, and there are a few more hacks you can do to make it even faster (http://www.techradar.com/news/software/applications/8-hacks-to-make-firefox-ridiculously-fast-468317). One note: the last tracemonkey browser they mention on the list doesn't support a lot of plugins, or so I've noticed.

Is there a way to install all 3 firefox's separately? Official, and both of the "beta"s and have them run independently?

Same thing with Safari? Able to run both versions independently?

Seems like FaceBook chat doesn't play nicely. You have too open it in a new window or tab and the little animations don't work either...

I've used the nightly webKits for a year now and I notice a noticeable decrease in speed when using normal Safari! Smokin fast!

AND now that they have included the Sparkle (Check/Download for update) framework, its even more awesome!

Webkit is 1.5 times faster than Minefield in sunspider javascript test. However, rendering is faster in minefield or may be it just feels so. But, I do prefer latest webkit as the fonts look crispier than minefield.

Webkit is quite a bit faster than Firefox beta. Another apple blog tested all of the browsers available at the time and webkit blew them all out of the water. Can't imagine that has changed. I have had a few compatibility problems with Webkit but the problem is usually fixed the next day.

I have been using webkit nightly builds for about a year now and they truly are FASTER. Plus they have better compatibility (in my experience) with web sites then safari does.

Using both Shiretoko (Firefox) and WebKit Nightlies (Safari) for months now with no problems so far. You can force-enable Firefox add-ons that complain they aren't compatible using the Nightly Tester Tools (take care!) and all of mine work great. Replacing Firefox with Shiretoko even solved crashing-when-printing/PDF-making problem on my wife's MBP.