WonsReallyHandy

by fwonce

36 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,136 reviews

17,437,455 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,071 reviews

1,756,378 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 1,059 reviews

1,117,513 users

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

iMacros for Firefox by Ipswitch, Inc.

Rated 4 out of 5 stars 471 reviews

675,794 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 532 reviews

685,741 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 270 reviews

302,412 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 72 reviews

184,701 users

Manage any SQLite database on your computer.

Flagfox by Dave G

Rated 5 out of 5 stars 665 reviews

430,542 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...

BetterPrivacy-signed by IKRG

Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...

Tamper Data by Adam Judson

Rated 4 out of 5 stars 149 reviews

93,531 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 50 reviews

108,088 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

FireGestures by Gomita

Rated 4 out of 5 stars 873 reviews

318,663 users

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

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

Rated 4 out of 5 stars 1,720 reviews

66,145 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

ScrapBook by Gomita

Rated 4 out of 5 stars 771 reviews

135,192 users

Helps you to save Web pages and organize the collection.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,450 reviews

155,647 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
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