Available direct from the delicious website, this plug-in adds delicious features to firefox, such as bookmarking and tagging pages. Download Plug-in

The user agent switcher for firefox can be a really useful tool, generally firefox support is good, but some web based applications reject it because they don’t recognize the agent string, with this plug-in you can fool the web server into thing you’re using IE.

This tool bar is really cool, it allows you to outline and label important objects, verify code and much much more, highly recommend for anyone who does web development !
Download Extension

If you use google then this extension is gonna be great. I came across it because it allow you to add https to your gmail so not just the username and password is encrypted, but it does sooo much more than that !
Plug-in Homepage

I found this over the weekend….

Spyware, Adware, Spam, Phishing, Viruses, Identity Theft Protection | SiteAdvisor
SiteAdvisor helps protect you from all kinds of Web-based security threats including spyware, adware, spam, viruses, browser-based attacks, phishing, online fraud and identity theft.

It seems cool, a different approach the the anit-phishing type stuff. Basically you get a simple security report about the sites you visit. The report comes in the flavour of a traffic light in your browser toolbar, green is safe - red is not. Another nice touch is the traffic light is added to our google results, so before you even click on a site you can determine how ‘hostile’ the webmaster may be.

I’ve been putting off upgrading to firefox 1.5 for ages, but my curiosity for this extension finally got the better of me !

Blogger Web Comments for Firefox
Blogger Web Comments for Firefox is an extension that makes it easy to see what bloggers are saying about a page you’re viewing in firefox

I know this isn’t exactly new news , so there are lots of places to find out about it ! I’ve been playing with it a little today, and still am undecided on whether it’s cool or annoying.

This is worth mentioning….

Sage: a feed reader for Firefox
Sage is a lightweight RSS and Atom feed reader extension for Mozilla Firefox.

Google reader is good, but it’s still got some usability issues, mainly that the default page/interface only gives a list of unread posts, where as sometimes you only want to see (or hide) a specific feed. Obviously the downside with sage is you need firefox, but who’s not using firefox