ColorZilla - Firefox Plugin

Really useful for discovering the code for that interesting colour shade you find lurking on a site on the WWW.

I use this, and it's excellent when you need to tweak the colours in a .css file.

It lurks here.

Copy Plain Text - Firefox Plugin

This is very handy if you want to copy chunks of text from the web without getting all the associated formatting. Really useful for pasting quotations into Wordpress and other blogging systems, like Blogger!

Find it here.

FoxClocks - Firefox plugin

An excellent plugin for Firefox which tells you what time it is in a series of locations around the world which you can choose.

Very useful if you sometimes need to ring people in another country, read the USA, without getting them out of bed.

I use it, and I like it.

It's here.

Reminder Fox - Thunderbird and Firefox plugin

Firefox is a reminder and to do list plugin which works and synchronises with the Firefox browser and Thunderbird email client.

It's very good and well worth trying.

Get it here.