My Favorite Add-ons

by Francisco Javier

12 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,622 reviews

2,747,646 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,388 reviews

1,631,490 users

The first and only download manager/accelerator built inside Firefox!

Web Developer by chrispederick

Rated 5 out of 5 stars 178 reviews

740,200 users

The Web Developer extension adds various web developer tools to the browser.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,319 reviews

508,036 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 282 reviews

335,121 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

PDF Download by Nitro PDF Software

Rated 2 out of 5 stars 635 reviews

247,986 users

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

X-notifier (for Gmail,Hotmail,Yahoo,AOL ...) by Byungwook Kang

Rated 4 out of 5 stars 1,406 reviews

150,072 users

Notifier for gmail, yahoo, hotmail, aol and more webmails.
X-notifier(aka WebMail Notifier) checks your webmail accounts and notifies the number of unread emails...
Supports : gmail, yahoo, hotmail, POP3/IMAP, facebook, twitter and more

Wiktionary and Google Translate by Zen

Rated 4 out of 5 stars 127 reviews

62,106 users

(former Google Dictionary and Google Translate)

In-line dictionary for any word you point to or double-click; whole page translation of any web page in another language.

Html Validator by Marc Gueury

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Firefox 23+, you need 0.958 (under review)
http://users.skynet.be/mgueury/mozilla

FireQuery by BinaryAge

Rated 4 out of 5 stars 43 reviews

45,219 users

Firebug plugin for jQuery development

iReader by MhdHejazi

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Experimental

Rated 4 out of 5 stars 96 reviews

8,818 users

View news stories and other articles in a very easy to read, clutter-free, scrollable display.

Pencil by Dương Thành An, Brainiac

Rated 4 out of 5 stars 84 reviews

4,629 users

Pencil is a Firefox add-on to do GUI prototyping and simple sketching

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