Liz, there's a whole bunch of 'portables', here:-
www.portableapps.com/apps
.....in the 'Internet' section.
I tend to favour the Chromium-based ones myself, having used Chrome since day 1, when it was released back in 2008. SlimJet and SRWare Iron both do portables; SlimJet only up to version 10, Iron still currently supporting XP.
There's also Chromium-portable, from
https://sourceforge.net/projects/crportable/files/
Version 49 still works perfectly well, and is quite safe to use. It's the last version to support XP.
With the portables, everything is contained within the one folder; bookmarks, extensions, the lot. Which is why you can copy the entire folder from one machine to another. All you need is to use the launcher, within the app folder, to start it.
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All down to personal choice, really. I tend to agree with cornemuse; you
don't need to run the 'latest & greatest' browsers all the time. I run 'Puppy' Linux most of the time now; although I package the 64-bit versions of Chrome for the community, and I'm currently 'beta-testing' Chrome 57, my personal 'fall-back' favourite is an elderly version of Chromium; 36.0.1985.143.....because it just 'works'. All the time.
I find that the best browsers for XP tend to be those that were around when it was still 'current'.
Mike.
