User Agent Switcher Extension

is a Firefox extension and allows you to switch the user agent of the browser. By Chris Pederick. [...]

Eiffel Tower extension

AllPeers

This new Firefox extension sounds like it might be useful. [...]

QuickNote

QuickNote version 0.3.1 is a notepad Post-it like extension for Firebird and is now available for download.Quicknote. [...]

screengrab

Immensely useful Firefox extension for grabbing full length screen dumps of websites. [...]

The Timemachine

Dust-Me Selectors

Dust-Me Selectors is a Firefox extension which highlights redundant CSS within the currently viewed page. [...]

Web Developer Toolbar

Chris Pederick has released Version 1.0 of his invaluable Firefox extension for Web Developers. [...]

Turn off Flash in Firefox

the only way to do this is by installing this Firefox extension. [...]

Social networking gone mad?

Follow in the footsteps of friends in your network by visiting all the sites they visit, withthis Firefox extension called Me.dium. [...]

Search Thresher

Search Thresher is a Firefox extension peoduced by Segala that allows users to search for Web sites that make claims about conformance to standards an [...]

Digital camera self-portrait assistant

file extensions with php

you can drop the file extension in your url's to leave nice and clean addresses like theletter.co.uk/contact instead of theletter.co.uk/contact.php. [...]

Firebug Lite

Cross-browser XForms

XForms is a complex but powerful replacement for HTML forms that relies heavily on cutting-edge XML technology. As a result of its complexity, browse [...]

JAWS Screen Reader Adaptation for Mozilla Firefox

you need JAWS and Firefox to run this (it's not a Firefox extension). [...]

Fix poor performance in Firefox with safe mode

Firefox can start up in safe mode, which means it loads the application without themes or extensions. This is the shortcut routine:Windows Start but [...]

Firefox 0.9 Release Notes

New features:New Default ThemeComprehensive Data MigrationExtension/Theme ManagerSmaller DownloadOnline HelpLots of bug fixes and improvementsFire [...]

Cruciform adaptor

Mixa

Ubiquity

Google Page Rank and other search stuff

Here's a useful guide to what Google Page Rank is and here's the collective viewpoints of 37 SEO experts on the dos and donts of SEO. And if you don't [...]

Where's my head at?

You may well ask.Normally, with good intentions, I aim to sit down and write something witty, sharp and memorable to post on The Letter. I know I've [...]

Chrome extensions