Add-ons
Extensions by Name
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User Agent Switcher
Requires Restart
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Validaty
Requires Restart
One Click Validator. Provides you a button to validate a page using a validator like w3c or another user defined
Vault Shortcut
Requires Restart
Adds a toolbar button that opens the LastPass Vault in an external browser.
Video Mouse Wheel
Use wheel mouse on videos to control video/audio/quality.
Choose flash/HTML5 on YouTube, autopause on background tabs, embedded videos.
And much more!
Video Pinner
Pins a YouTube video to the page so that it is always visible while you scroll and read comments. Port of Chrome's Video Pinner extension
View Dependencies
Requires Restart
View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.
View Source
View Your Certificates Email Address
Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager
VKontakte.ru Downloader (music/videos/photos @ VK)
Requires Restart
Download music, videos and photos from VK.com / vkontakte.ru. One-click download, natural filenames, displaying file size and bitrate for music, downloading HD video, downloading HQ photos. No spam, no usage of your account, no spyware.
w3schools-search
WDownloader WGrabber
Web Cache View Plus Proxy
Requires Restart
Displays a web cache and/or web proxy view of a web page. You can call it from menu of tab, page context, link context and maybe while page loading.
Web Server Check Tool
Requires Restart
A tool to perform basic checks on web and DAV servers.
Webmaster SAPE
Requires Restart
Toolbar contains a set of functions, which expands the abilities of webmasters and optimizers, when working in the interface of SAPE exchange.
WebODF
Viewer for OpenDocument Format office files. It can display documents saved from LibreOffice, OpenOffice, Calligra, Abiword, Microsoft Word, Excel, PowerPoint. The documents should be saved in the OpenDocument Format.
WebPG for Mozilla
Requires Restart
An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey
WebRTC Permissions UI Toggle
Requires Restart
A toolbar button for SeaMonkey to bypass the missing WebRTC permissions dialog and temporarily allow media capture.
Wepware - Capture and Share Live Content
Requires Restart
Grab live snapshots of anything on the internet, organize your collected content into folders and share with friends through SNS.
Whois & Flags Firefox & Websites Popularity Rating
Requires Restart
Display Country Flag indicating Website Physical Location (Country, State, City). Website Popularity (Live Visitor Statistics). Shows how many users are visiting any World Website per day. Website IP IPv6 Addresses, DNS, Hosting. IP Whois Lookup
Whois Lookup & Hosting & DNS & Site Flags Firefox
Requires Restart
IP Whois Lookup & Website Reviews & Rating. Display country flag indicating website location. Alexa and Norton Antivirus Site Adviser. Supported: GoDaddy, NetworkSolutions, Dotster, 1and1, NameCheap, Register, Yahoo, 123-Reg, FatCow, Enom, FastHosts.
To create your own collections, you must have a Mozilla Add-ons account.
