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New Tab Override (browser.newtab.url replacement) No Restart

This add-on brings back the ability to change the page which is shown when opening a new tab.

Rated 5 out of 5 stars (124)
63,811 users

Tab Memory Usage No Restart Featured

Tab Memory Usage displays the amount of memory is used by each tab

Rated 4 out of 5 stars (27)
55,845 users

Undo Closed Tabs Button

Tired of going to History -> Recently Closed Tabs just to undo a closed tab? Then this extension is for you!

This extension allows you to undo closed tabs via a toolbar button or the right-click context menu.

Rated 4 out of 5 stars (367)
49,621 users

New Tab Tools No Restart Featured

Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...

Rated 4 out of 5 stars (195)
45,864 users

Showcase

Easily find and manage your browser tabs.

Rated 4 out of 5 stars (150)
44,937 users

Open Bookmarks in New Tab

After you installed this addon to your Firefox, bookmarks are opened in new tab always.

Rated 4 out of 5 stars (71)
42,515 users

Context Search

Expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose the engine you want to use for each search.

Rated 5 out of 5 stars (270)
41,383 users

Tab Auto Reload

Adds auto reload menu to tab.

Rated 4 out of 5 stars (41)
38,104 users

OneTab No Restart

OneTab - Too many tabs? Convert tabs to a list and reduce browser memory

Rated 4 out of 5 stars (217)
37,732 users

Beyond Australis No Restart Featured

Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!

Rated 5 out of 5 stars (277)
34,336 users

Add Google Search To New Tab Page Featured

An extension that adds a Google search box to the standard Firefox new tab page

Rated 4 out of 5 stars (25)
32,045 users

Restartless Restart No Restart

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

Rated 4 out of 5 stars (211)
29,805 users

Snap Links Plus

Select a number of links with a rectangle and open them all in new tabs in the same or a new window(s), download them or copy them to the clipboard. You can also lasso checkboxes to quickly check or uncheck them.

Rated 4 out of 5 stars (106)
28,117 users

Window and Tab Limiter

This extension will automatically close old windows and tabs so you don't wind up with zillions of old windows open at the same time. NEW FEATURES IN 3.0. Password protection....and 3 modes of operation.

Rated 4 out of 5 stars (54)
28,042 users

Similar Sites - Find The Best Related Websites

Instant access to the best websites related to the site you are browsing!

Rated 5 out of 5 stars (20)
24,320 users

Tabs On Bottom No Restart

Applies "Tabs on Bottom" appearance.

Rated 4 out of 5 stars (86)
24,033 users

Hide Caption Titlebar Plus No Restart

"Maximize your screen space by adjusting Firefox window TitleBar, borders, Tabs, Toolbars, etc!", with 'smart' options, *optional* custom caption & resizers.  
Multiple Configurable Actions for both screen-corner buttons: Firefox & Close buttons!

Rated 5 out of 5 stars (402)
23,824 users

NewTabURL

Select the default URL when new tabs are opened.

The options are: "A blank page", "The home page", "The current page" or a user defined URL.

When there is an URL in the clipboard, it is also possible to open automatically that URL in the new tab.

Rated 4 out of 5 stars (202)
21,958 users

Open Link in New Tab

Loads links in new tabs, by conditions.

Rated 3 out of 5 stars (57)
20,937 users

BarTab Lite No Restart

BarTab Lite is the alcohol free version of BarTab. (Not really.)

Rated 4 out of 5 stars (53)
20,001 users