This is a list of the Firefox Add-Ons we I use. I am constantly playing around with them so the list will defiantly grow. I am not entirely sure how Firefox reacts to having dozens of add-ons installed, but I expect it becomes a bit of a memory hog (I guess so I am using 200meg with it now) therefore I would be careful when installing loads of add-ons if you have a low specced computer. Comments are enabled for suggestions!

1. Adblock Plus – A brilliant add-on for Firefox, it removes most/all advertising from websites. I find the only adverts I ever see are the Sponsored Listings on Google, it does remove Google Adsense Adverts from other sites though. While I love this add-on I think as it gains popularity more and more people will look into ways to bypass it. If everyone had this add-on it would essentially ruin most of the Web 2.0 companies out there as advertising income would plummet.
2. No Script – This is a Javascript/Java/Flash blocker. This is another tool I love as I am paranoid about online security. It is the most powerful Anti-XSS protection available for browsers at the moment. It is also great for Webmasters/Web developers/SEO Professionals as it allows you to view a website without JavaScript.
3. IE Tab – Another useful one allowing web developers to see how a web page is displayed in IE.
4. SEOpen – A useful SEO analysis tool, you can right on a website and check for backlinks, pages within index, whois, HTML validator etc
5. Google Toolbar – Not very important but its nice to see the page rank of a site, I also use it to check Gmail etc