Must-have Firefox add-ons for developers

If you're a Web Developer or Designer, the following Firefox add-ons are a must:

1. Firebug (http://getfirebug.com/)
Tested on: MAC OS X Snow Leopard, Ubuntu 9.1, Windows 7

Firebug allows you to pin-point errors in html, css, and JavaScript. You can even test code in real-time right in the browser before changing your source files, making testing a quick, and simple process.

2. ColorZilla (http://www.colorzilla.com/firefox/)
Tested on: MAC OS X Snow Leopard, Ubuntu 9.1, Windows 7

ColorZilla adds an eyedropper and color picker to your browser which allows you to quickly grab the colour code of anything in the browser. Also allows you to save your favourite pallets and pick colours from a prism.

Note: Unfortunately the eye-dropper tool does not appear to function in Linux, though the color picker and pallets tools seem to work fine.

3. Screengrab! (http://www.screengrab.org/)
Tested on: MAC OS X Snow Leopard, Ubuntu 9.1, Windows 7

Screengrab! is perfect for people like me who can't remember the key-strokes for taking a screen capture on Mac or Linux, but it's great for PC users too since it allows you to save your capture to a file or to the clipboard. Screengrab! allows you save the visible window/frame, a portion of the screen, or the entire window.