What we once referred to as Firefox Extensions are now known as Firefox Add-ons. Call them what you want, I love them regardless. Many of them, in fact, play a key role in my day-to-day life.
Here are 10 Firefox Add-ons I simply can't live without.
Adblock Plus - You know those ads you see all over the place when surfing the web? I don't. I haven't seen them in years and I don't miss 'em at all.
ColorZilla - If I need to quickly know the hexidecimal code for any colour on any web page I visit, this tool tells all. It's awesome.
Google Browser Sync - Manage one set of bookmarks and see them from any computer in the world.
Greasemonkey - What can I say about this one? There are many great scripts that customize the way a webpage displays.
IE Tab - Need to test a page in IE? This add-on lets you do that in a Firefox tab. It's also useful for those sites that just don't work in Firefox.
MeasureIt - Draw out a ruler to get the pixel width and height of any elements on a webpage.
Sage - This is my RSS reader.
Screengrab! - This is an old favourite that didn't work in Firefox 2 but was recently updated. It's nice to have it back as it lets me easily save or copy screen caps.
Tabbrowser Preferences - This gives you more control over Firefox's tab behaviour. For example, I have it automatically open _blank targeted links in a new tab.
Web Developer - An absolute must for any author of web pages, this add-on lets me easily resize the browser, view the CSS, edit the CSS and HTML in Firefox and a billion other web author tasks. Irreplaceable.
Honourable mentions go to Copy Plain Text, Download Statusbar, Firebug, Fission, Forecastfox, FoxyTunes, Google Toolbar, LinkChecker, Make Link, PDF Download and UnPlug.
