Looking for a slim, fast browser?
Chrome.
http://www.google.com/chrome/
Best browser I've ever used.
Looking for a Firefox contender, with the ability to change *anything*?
Maxthon2
http://www.maxthon.com/
This browser beats the crap out of firefox in speed, footprint and functionality.
It's sad that it's not known by everyone - but with that said, every dev I know uses it because it's debugging features are of the hook. Hell, it even has
- Page debugging / consoles built in
- Page screenshot/cap tools built in
- Adblocker built in
- URL sniffers for youtube etc
- hotkeys for URLS
- custom urls [type gfy to go direct to gfy, etc]
- rss feed reader
- online favourites
- mouse gestures
- form filler
- and plugins, and filters and security updates.
and it still runs lighter and faster than ff
