A List of Stable addons which ussually play well with Firefox and its other addons.
Preview and navigate tab contents through popup.
Collector's Note Consumes a good amount of RAM. Do not use if you have more than 70 addons or have less than 1GB RAM.
Enables automatic replay of a YouTube video or watching a part of it again and again...
Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!
You are annoyed because your password fields are always scrambled though nobody else but you can see the screen? This most advanced unscrambling addon shows your passwords in readable letters, while being fully customizable to fit your needs.
Automatically resumes YouTube videos from where you played them last. Without this extension, for example, when you click through YouTube videos, back and forth, they always start from the beginning.
The greatest user script engine on the Internet (a fork of Greasemonkey).
Tired of having multiple tabs open just to view your favorite Google services and other Apps like Feedly, Evernote, Twitter and more? Now you can see them right from your Gmail Inbox.
Install now or visit www.integratedinbox.com for more info.
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
Collector's Note If you want to check a page for changes occurring over a period of days/weeks/months, use "Update Scanner". If you want to be alerted about changes that occur over seconds/minutes/hours, use "Check4Change". Following RSS Feeds, if a page makes them available is the best way to keep abreast of changes made to a webpage, but if a webpage does not make RSS feeds available, then using "Update Scanner" or "Check4Change" is the only way to check whether any changes have been made to the webpage.
Bypass compulsory web registration with the context menu via www.bugmenot.com.
Collector's Note Sometimes works, sometimes doesn't. BugMeNot also provides a bookmarklet.
It adds some options to launch easily other profiles and the Profile Manager.
Collector's Note Better than Switchy, which is another addon to switch between firefox profiles.
Removes formatting from copied text.
Collector's Note This is an older but still very functional addon. See Copy Plain Text 2 instead.
Secure Login is an extension for Firefox integrated password manager.
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
Collector's Note I am using Firefox 18 at the time of writing. And these days I prefer Tab Utilities over Tab Mix Plus because it allows me to stack Tabs like Opera. Tab Mix Plus so far does not have this function. Also I use the addon Tab Kit 2nd Edition which plays better with TU than with TMP. The advantages of Tab Mix Plus are that although it offers fewer functions than Tab utilities, those functions are solidly built and complete. Also most developers who make tab related addons ensure that their addons are compatible with Tab Mix Plus, so TMP works well with most other Tab related addons (except Tab Kit 2nd Edition which works with Tab Utilities better because both were developed by the same guy)
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