hd.deman

by hd.deman

24 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,650 reviews

2,685,104 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 1,403 reviews

1,553,790 users

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

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 866 reviews

1,621,873 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 183 reviews

703,603 users

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

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 198 reviews

429,143 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 581 reviews

803,994 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...

Microsoft .NET Framework Assistant by Microsoft Corporation

Rated 2 out of 5 stars 116 reviews

1,818,236 users

Adds ClickOnce support and the ability to report installed .NET versions to the web server.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 136 reviews

193,927 users

View HTTP headers of a page and while browsing.

ReloadEvery by Jaap Haitsma

Reloads web pages every so many seconds or minutes. The function is accessible via the context menu (menu you get when you right click on a web page) or via tab context menu (right click on the tab)

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,263 reviews

266,434 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.

YSlow by YSlow

Rated 3 out of 5 stars 167 reviews

137,601 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

HackBar by Johan Adriaans, Pedro Laguna

Rated 5 out of 5 stars 34 reviews

29,526 users

Simple security audit / Penetration test tool.

SearchPreview by Edward Ackroyd

Rated 4 out of 5 stars 357 reviews

132,378 users

The extension previously known as GooglePreview. Inserts preview images (thumbnails) and popularity ranks of web sites into the Google, Yahoo, Bing and DuckDuckGo search results pages.

FireQuery by BinaryAge

Rated 4 out of 5 stars 43 reviews

45,185 users

Firebug plugin for jQuery development

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 26 reviews

29,188 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression
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