What do all these have in common: A Web Browser, FireFox, IceWeasel, SwiftWeasel.
The answer? They're all based on FireFox, in turn on Mozilla.
Here's the breakdown. FireFox is of course, the main web browser.
A Web Browser is the unbranded FireFox, basically FireFox without the FireFox specific parts.
IceWeasel is the Debian branch, used because Debian doesn't agree with Mozilla's licenses.
SwiftWeasel is a Linux-optimised version of FireFox, and one I'm currently trying.
SwiftWeasel's optimization makes it a lot easier to use on this old laptop, which with normal FireFox 3 has a few issues because FireFox is fat. It uses a considerable amount of system resources, and slows down a fair bit after three tabs, regardless of what's on them, and if there's one tab with many images on will practically kill the browser.
SwiftWeasel manages these issues more gracefully, and so far has managed everything far better.
The only issue I had is importing settings. When installing FF 3.5, it ransacks FF3's settings and profiles, and imports it all. SwiftWeasel however, doesn't. Where I use a lot of computers, I'm used to re-installing a ton of addons (I use a lot, and find it hard to stop using some), but importing settings is tedious. Which is where the FEBE extension comes in. I made a backup from FF3 (and some from 3.5 before it stopped working again) using it, then install FEBE into SwiftWeasel, and import. Solved.
I did attempt to import a complete profile import using it, however with only one profile, it refused, and also crashed. Ah well.
That aside, anyone who uses Linux should, I believe, at least try SwiftWeasel. Google it yourself, too many people rely on people giving links.
As to extensions, for anyone interested, here's my complete list, with a few notes.
Classic Compact - with Classic Compact Options
Ad Hacker - Used to block all ad tracking sites via either NoScript or an Adblock Plus rule
AdBlock Plus - Using filter lists EastList+EasyPrivacy and Malware Domains from the Adblock Plus site
AmIOnMySpace.com - I tolerate Facebook, I hate MySpace. And Twitter.
British English Dictionary - not that I use it, it's usually ignored.
CustomizeGoogle - Damn, where would I be without it, Google search is no longer lame with this
Download StatusBar - Though, I'd prefer something more like Chromium/Google Chrome's instead.
Facebook Beacon Blocker - like I said, I tolerate it. I don't like it spying on what I do. Paranoia online is useful.
Faviconize Tab - useful for hiding incriminating tab descriptions, or saving on space.
FEBE - see above, I've only just started using it, but it's good for saving settings between browsers and computers.
Fission - saves a little space at the bottom with this
Gaia Online Toolbar - Gaia Online is a site I'm sometimes on, I don't do much on there. Look for (currently) Adept Alex on there, that's me.
Gmail Notifier - speaks for itself, I don't actually use Gmail often
Greasemonkey and Greasefire - Greasefire makes finding scripts easy, Greasemonkey's scripts are very useful. No, I'm not telling you which ones I use.
Long URL Please - STOP POSTING SHORT URLS! I like to know exactly WHERE I'm going to be taken.
Nightly Tester Tools - See also my post on how to get incompatible addons working. Bloody useful addon this, plus you can change the titlebar's part which normally says FireFox, SwiftWeasel, etc to whatever you like. I like confusing people by making it read "Windows Internet Explorer", or sometimes Exploder instead of Explorer. Never fails.
NoScript - by itself, any FireFox based browser is an improvement over IE, but this makes it even more secure. If it could be made part of the normal FireFox trunk code, then I think it should be. It's that good.
Stop Autoplay - oh, yes. No more embedded music playing in the background, no more YouTube or Google Video playing when I don't want it to, or even loading, for that matter, which since this old laptop has a few minor issues with either, is perfect.
StumbleUpon - never be bored again. Or get any sleep.
Targeted Advertising Cookie Opt-Out (TACO) - I don't actually know if this helps much, but apparantly, it sets an Opt-Out for cookies. I'd personally prefer if all cookies were Opt In instead.
TrackMeNot - in conjunction with NoScript and the other anti-tracking addons, this also does exactly what it says on the can. As you may have gathered, I don't like being tracked.
TryAgain - Page load errors are a thing of the past. Sort of. This just keeps trying until something different happens. Wait, isn't that the definition of insanity?
Update Notifier - a lot easier for checking for and installing updates for everything, not to mention offering an instant browser restart on demand.
User Agent Switcher - This was an attempt to get Hotmail working in FireFox 3.5, since any emails I sent in that were blanks. With this, most sites will identify your browser as whichever you specifiy. I use the importable massive list of agents, as it provides tons of choices. I use about three - Firefox 2, for hotmail, iPhone for when FF2 fails, or I want to do it really quick, and Opera 9.64 Linux sometimes.
WebbMail Notifier - like Gmail, but this checks my two Hotmail and one Yahoo emails. It used to do Gmail, but that stopped working, hence the Gmail notifier.
WoT - with community ratings for sites, this will tell you if the site is dangerous or not. Useful for avoiding dangerous ones, though NoScript also disables some of the dangerous parts.
Xmarks - a must have for anyone who uses more than one browser, computer, or both. Keeps bookmarks (or favourites for Opera/IE/Safari users)
YouTube to MP3 - It's been a long time since I used this actually, but it does exactly what it says - converts the soundtrack of a YouTube video to an mp3 file and starts a download for it.
I use a lot of Addons, like I said. Some of them I could get rid of. A lot of them are really only there because I'm paranoid online.