Useful Firefox Plugins and Extensions.

 

Web Developer

Once you find it, you won't know how you ever lived without it. A godsend for anyone who publishes Web pages, this Extend Firefox winner makes validation, design, and CSS work much more efficient.

Google Browser Sync

This add-on from the search-engine leader allows users to sync all of their Firefox browser settings, such as bookmarks, passwords, and persistent cookies, across multiple computers.

CookieSafe

If you're the type who stays on top of your browser cookies, this simple and effective extension might be up your alley. It adds a small icon to your status bar that lets you allow and deny cookies globally or for specific sites.

ColorZilla

Another fabulous tool for Web designers and graphic artists, this helpful extension offers color readings for items within your browser. You can also measure distances between two points or get information about DOM elements quickly and easily.

MenuX

For those of us who use multiple Firefox extensions, it's easy to be deluged by the wealth of new icons, sidebars, and taskbars. Mark Bokil's nifty add-on helps save valuable browser space with a library of small icons that control numerous browser and extension functions.

Download Embedded

 This add-on lets you capture various forms of content embedded in Web pages. Movies, MP3 files, and Flash games are only a few of the possible files types that can be downloaded.

Performancing

Bloggers using a variety of platforms like the ease of use and speed of this publishing tool. Drag and drop notes from existing Web pages, take notes for later use, or post directly to your blog.

NoScript

We like NoScript, too. Like many of the best Firefox extensions, this add-on does one thing very well: specify which sites can use JavaScript, Java, and other executable code, and shut down the rest.

Tab Mix Plus

 This outstanding add-on also makes the grade with our users. Add close buttons to individual tabs or define keystrokes for navigating through and manipulating tabs.

FoxyTunes

 It's the most popular add-on after SiteAdvisor. Control your favorite media player with controls built right into the browser interface.