FF addons

[Trieb]

British English Dictionary (https://addons.mozilla.org/nl/firefox/addon/3366/) Come in handy for the non UK-ers and Lazy to check some spelling.
FireFTP (https://addons.mozilla.org/nl/firefox/addon/684/) No nonsense FTP-program.
Flagfox (https://addons.mozilla.org/nl/firefox/addon/5791/) Shows what country the server of the web-page you visit is located.
Gmail Notifier (https://addons.mozilla.org/nl/firefox/addon/173/) Can check multiple gmail-accounts for incoming post.
NASA Night Launch (https://addons.mozilla.org/nl/firefox/addon/4908/) Very good looking dark theme.

[DrDeath]

Xmarks (http://www.xmarks.com/) ............... Bookmark Synch and search . Online backup of bookmarks that can be synched to any browser if you have access to internet .

NoScript (https://addons.mozilla.org/nl/firefox/addon/722/) ............. The NoScript Firefox extension provides extra protection for Firefox, Flock, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript (http://en.wikipedia.org/wiki/JavaScript), Java (http://en.wikipedia.org/wiki/Java) and Flash (http://en.wikipedia.org/wiki/Adobe_Flash) and other plugins (http://hackademix.net/2009/02/07/browser-plugins-add-ons-and-security-advisers/) to be executed only by trusted web sites of your choice (e.g. your online bank), and provides the most powerful Anti-XSS protection (http://noscript.net/features#xss) available in a browser.

Multirow bookmarks toolbar (https://addons.mozilla.org/en-US/firefox/addon/6937/)........ Allows you to add multiple rows to your bookmarks toolbar in firefox.

Betterprivacy (https://addons.mozilla.org/en-US/firefox/addon/6623/)..............Better Privacy serves to protect against not deletable longterm cookies, a new generation of 'Super-Cookie', which silently conquered the internet. This new cookie generation offers unlimited user tracking to industry and market research. Concerning privacy Flash- and DOM Storage objects are most critical.
This addon was made to make users aware of those hidden, never expiring objects and to offer an easy way to get rid of them - since browsers are unable to do that for you. Read the rest on the download page .


Torbutton (https://addons.mozilla.org/en-US/firefox/addon/2275/)..............Torbutton provides a button to securely and easily enable or disable the browser's use of Tor. It is currently the only addon that will safely manage your Tor browsing to prevent IP address leakage, cookie leakage, and general privacy attacks. You need Tor installed also, read about Tor project here (http://www.torproject.org/)

[Trieb]

Clear Cache Button (https://addons.mozilla.org/en-US/firefox/addon/1801/developers/roadblock?src=addondetail) Yeah, that's what it does.

[DrDeath]

Google analytics opt out browser add-on (http://tools.google.com/dlpage/gaoptout) :To provide website visitors with more choice about how their data is collected by Google Analytics. The add-on communicates with the Google Analytics JavaScript (ga.js) to indicate that information about the website visit should not be sent to Google Analytics.


Global security settings panel for Flash (http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html) This is not an add-on per se but Adobe's own online tool on its Web site to erase Flash cookies and manage Flash player settings.

[DrDeath]

Anonymizer nevercookie (http://nevercookie.anonymizer.com/)
Introducing Anonymizer Nevercookie™, a FREE Firefox plugin that protects against the Evercookie API. The plugin extends Firefox’s private browsing mode by preventing Evercookies from identifying and tracking users.
Evercookie is a new, more persistent cookie form that enables the storage of cookie data in a number of different locations, such as Flash cookies and various locations of HTML5 storage. This allows websites to track user behavior even when users have enabled private browsing. Because an Evercookie stores data in locations outside of where standard cookies are stored, an Evercookie can rebuild itself unless users go through a number of steps to completely clear and reset their local storage.


HTTPS Everywhere (https://www.eff.org/https-everywhere) is a Firefox extension produced as a collaboration between The Tor Project (https://www.torproject.org/) and the Electronic Frontier Foundation (https://eff.org/). It encrypts your communications with a number of major websites.
Many sites on the web offer some limited support for encryption over HTTPS (https://secure.wikimedia.org/wikipedia/en/wiki/HTTPS), but make it difficult to use. For instance, they may default to unencrypted HTTP, or fill encrypted pages with links that go back to the unencrypted site.
The HTTPS Everywhere extension fixes these problems by rewriting all requests to these sites to HTTPS.