Hi!
After Firefox and Chromium, there's a bunch of
open source web browsers
listed on [2], but a brief spot check showed many as being Linux only
(or outdated Mac builds). One that looked promising was Brave[3], though
it's a relatively new browser and I would need to do more research
regarding #3.
I've been using Brave for a couple of months occasionally, and it seems
to work pretty well. It has (some) adblocking in default config, and
some other privacy-enhancing settings, which are probably not very
important for Wikimedia sites but may either break some other sites or
make them bearable :)
It's pretty young, so I don't think we can say much about security
record yet - IIRC it's based on Chromium, and it's updated pretty
frequently, and it's easy to use (though the UI might be a bit more
spartan then others for now, and not many extensions available - but for
ex-IE users it may not be an issue).
--
Stas Malyshev
smalyshev(a)wikimedia.org