by zhou le

22 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,793 reviews

2,285,369 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 1,612 reviews

1,381,086 users

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

Web of Trust, WOT: Website Reputation Ratings by WOT Services

Rated 3 out of 5 stars 1,643 reviews

1,065,900 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected

LastPass Password Manager by LastPass, Andrew Zitnay

Rated 4 out of 5 stars 1,237 reviews

754,107 users

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

New Tab Homepage by Ben Basson

Rated 4 out of 5 stars 341 reviews

128,990 users

A very simple tabbed browsing extension that loads your homepage when you open a new tab. If you have multiple homepages, the first is chosen.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,516 reviews

318,032 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!

FireGestures by Gomita

Rated 4 out of 5 stars 877 reviews

386,376 users

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

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,191 reviews

254,952 users

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 157 reviews

171,950 users

View HTTP headers of a page and while browsing.

Showcase by Josep del Rio

Rated 4 out of 5 stars 150 reviews

67,216 users

Easily find and manage your browser tabs.

YSlow by YSlow

Rated 3 out of 5 stars 195 reviews

101,106 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.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 640 reviews

127,368 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

ReminderFox by Tom Mutdosch, Daniel Lee

Rated 4 out of 5 stars 496 reviews

96,242 users

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

ShowIP by ShowIP Dev Team

Download Now


Rated 3 out of 5 stars 283 reviews

67,741 users

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

FoxTab by The FoxTab Team

Download Now


Rated 4 out of 5 stars 1,621 reviews

70,894 users

3D in your browser! FoxTab brings innovative 3D functionality to your Firefox.

New! Top Sites for FoxTab (aka Speed Dial).
  1. 1
  2. 2
Results 115 of 22

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

Recently Viewed