Goto Google, or any other site with a search-bar, right-click and add a keyword for this search to use it in the adressbar (followed by a space and search keywords).
Bookmark these URL's and add a small keyword to the bookmark properties. Now you can open the preferences and other windows in a tab by typing the keyword in the adressbar!
This one is just plain wierd-and-scary :S
To configure and tuning firefox parameters, type this in your adressbar: 'about:config
'. Change parameters at your own risk, see "More hacks" for help below on this page!
More useful about-pages:
Use the adressbar for sending mails with your default mail client like this, 'mailto:user@company.com
' (this actually works for any browser).
live http headers
- cannot miss this for a sec.
user agent switcher
- for fooling stupid web "developers"
web developer
- lots of them out there, invaluable if you "HTML"
IE-tab
- nessesary evil for stupid-corporate-proprietary-IE-only-webpages, SSO and testing. No reason to leave FF for that ;)
foxy proxy
- change proxy quickly
noscript
- enable only scripting from trusted sites
adblock plus
- block URL's using wildcards
Newsfox
- RSS reader
Tree style tab
- more & wider tabs on the sidebar
There are also a number of applications in the form of [mainly XUL] extension available. Some examples: IRC client, FTP(S) client, games, calculators, IM client, web server, RSS readers, music player, etc. (see Mozilla.org extensions XUL page).
I was running into a problem on windows with my corporate user profile when using FF. My limit is 3MiB and the FF profile cache is taking away a large chunk of this. By moving the profile directory away from your user profile to another place on the local drive this problem is solved (got a laptop, so local=roaming for me).
Favorite version: still 1.5.0.7 => moved to FF3b5