After months of occasional experimentation, I finally made Firefox my default browser a few weeks ago.
Encouraging a Mac user to stop using Safari is a harder sell than encouraging a Windows user to stop using Explorer; Mac users already have tabbed browsing, and aren’t plagued by spyware, security craters, or broken CSS support. And Safari has a cleaner interface, so Firefox isn’t going to win over Mac users on looks alone. But FF does have luscious chocolatey goodness where it counts: More powerful bookmark management, plugin sidebars, better resource management (or so it seems), embedded page searching and search string highlighting (this feature alone is worth switching for), even faster page rendering than Safari… the list goes on.
Also experimenting a bit with Firefox extensions, and am blown away by Chris Pederick’s Web Developer Extension, which can analyze any web page (especially ones you’re working on) any which way to Sunday. Rather than list its features, just scan this page and imagine being able to do everything listed there from a single browser toolbar. Phenomenal.
Now if only Thunderbird could make similar advances on the state-of-the-art mail client technology — do for email what Firefox has done for browsers… But judging from the relative amount of press the two are receiving, the Thunderbird project doesn’t seem to have nearly the same momentum as Firefox.