by marc-marc

16 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,987 reviews

21,495,031 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).

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,842 reviews

4,732,362 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,799 reviews

2,256,333 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...

Tamper Data by Adam Judson

Rated 4 out of 5 stars 133 reviews

113,049 users

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

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 306 reviews

286,986 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 341 reviews

148,513 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

YSlow by YSlow

Rated 3 out of 5 stars 199 reviews

95,993 users

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

Selenium IDE by Jason Huggins, Adam Goucher, others

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Rated 5 out of 5 stars 1 review

5,479 users

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

FoxClocks by Andy McDonald

Rated 4 out of 5 stars 314 reviews

64,664 users

FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.

AutoPager by Wind Li

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Rated 4 out of 5 stars 404 reviews

55,872 users

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

IE View Lite by Grayson Mixon

Rated 3 out of 5 stars 75 reviews

14,586 users

This is a cut down version of IE View by Paul Roub, which is 47.4 KB. All the same UI and features are there. It has a right click menu item to open a page in IE and a list of sites to always open in IE. It can close tabs automatically and send...

Compact Menu 2 by Milly

Add a compact menu button to the navigation toolbar, and hide the menu bar.

FireLogger by BinaryAge, Jan Odvarko

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Rated 3 out of 5 stars 10 reviews

1,595 users

Logging support for web developers (PHP, Python, ColdFusion)

Source Viewer Tab by Piro (piro_or)

Rated 4 out of 5 stars 34 reviews

2,080 users

Shows web page sources in tab.

Safari View Win by Lutz Issler

Rated 4 out of 5 stars 8 reviews

816 users

Adds a context menu entry to open the currently viewed web page in Safari on Windows.
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