In March I posted a list of the security and privacy extensions and usability extensions I use with Firefox. Because of the positive feedback I thought I'd create an updated post merging the two and showing some more extensions I've picked up since then. This page will always be available under http://rubenerd.com/firefox-extensions/.
What I like about most of these extensions is that they install unobtrusively in the statusbar and only inform you when action needs to be taken; not to mention peace of mind you get from knowing you're using a browser that's far more secure by default. In other words, you don't need to be a security nut to use and benefit from these!
|BetterPrivacy||Protects from "super cookies" and Flash cookies that can be unscrupulously used to track you|
|SSL Blacklist||Warns if SSL certificates are signed by a suspect certificate authority and/or with the vulnerable MD5 algorithm|
|PermitCookies||Allows you to disable cookies in Firefox Preferences and only allow sites you trust|
|Ghostery||Notifies you of invisible web elements such as web bugs that are designed to track your behaviour|
|BlockSite||A simple, lightweight blacklist utility you populate with sites you want to block including elements on other pages that are hosted on said sites|
|AdBlock Plus||Removes ads from pages rendering them faster; also blocks attacks that use maliciously malformed ads|
|Greasemonkey||Lets you modify how pages work and look. I use it to hack Google Reader into something useful|
|LORI||Tracks how long it takes for a site and its elements to load, useful for debugging your own pages|
|FoxClocks||Adds any number of world clocks to either your status bar or your bookmarks bar|
|FireFTP||Very slick Norton Commander-ish dual pane FTP/SFTP client that launches in it's own tab|
|TreeStyleTabs||A tree-style tab tar, akin to a folder tree. New tabs opened from links are automatically attached to current tab|
|British English Dictionary||Let's you spell colourful words your favourite way ^_^|