My Favorite Add-ons

by Martin Schejbal

14 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,791 reviews

2,434,982 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...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 957 reviews

1,299,661 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 382 reviews

435,751 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Web Developer by chrispederick

Rated 5 out of 5 stars 217 reviews

600,881 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 634 reviews

625,503 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Full Web Page Screenshots (♥♥♥♥♥) by susbox

Rated 5 out of 5 stars 434 reviews

285,707 users

FireShot makes full web page screenshots. Demo:

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 157 reviews

181,651 users

View HTTP headers of a page and while browsing.

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 207 reviews

89,050 users

Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.

Download Manager Tweak by squashr1979, andman42

Rated 4 out of 5 stars 406 reviews

81,550 users

Allows the download manager to also open in a tab or sidebar, and adds some optional display changes.

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 126 reviews

155,612 users

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

SEO Doctor by vprelovac

Rated 4 out of 5 stars 72 reviews

19,142 users

SEO Doctor allows easy SEO diagnosis and problem solving for webmasters.

Zindus by Leni Mayo

Rated 4 out of 5 stars 207 reviews

37,546 users

Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)

Screengrab by Andy M

Rated 4 out of 5 stars 592 reviews

27,268 users

Screengrab! saves webpages as images... but not for new versions of Firefox.

FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.

Therefore, Screengrab is EOL.

Gmail Notifier by Doron Rosenberg

Rated 4 out of 5 stars 622 reviews

21,727 users

Note from Mozilla: This add-on has been discontinued. Try WebMail Notifier instead.

The original notifier for Gmail.

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