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QuickDrag Requires Restart

Extends the function of the drag-and-drop mouse gesture so that it can be used to load URLs, do a web search of selected text on a page, or save an image on a page. The successor to Super DragAndGo.

Rated 4 out of 5 stars (324)
2 users

AutoPager Requires Restart

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.

Rated 4 out of 5 stars (394)
1 user

Keyword Search

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (84)
2 users

LikeThePage - Facebook Like Any Page! Requires Restart

Easily share web pages you like with your friends and see how many people on Facebook like the page you are on!

Rated 4 out of 5 stars (30)
0 users

TipTopic Requires Restart

While you're surfing your favorite pages/topics on the web TipTopic informs you on who else is browsing the same pages/topics and is interested in/ available for discussion. Enjoy live dialog with your favorite topic followers while surfing the web!

Not yet rated
0 users

Xclear Requires Restart

Safari-like icons in the URL, search and find fields to clear their contents.

Rated 5 out of 5 stars (44)
2 users

WikiSearch Requires Restart

Search Wikipedia through the context menu.

Rated 4 out of 5 stars (9)
14 users

AuctionSearchKit Requires Restart

One-click eBay tools providing useful information to the buyer including a map of where items are located, past feedback on similar items and seller history/statistics.

Not yet rated
1 user

BeeFree Requires Restart

Removes tracking links from several web search engines.

Rated 4 out of 5 stars (12)
1 user

Search Engine Quick Switcher

Switch the current search engine on the fly! Press Control + Shift + Down Arrow to switch to the next search engine or Control + Shift + Up Arrow to select the previous one.

Rated 3 out of 5 stars (2)
1 user

FromWhereToWhere Requires Restart

Link suggestion: based on user's local browsing history only.
Browsing history searching: list the pages from where you visited one page, and all the other pages you visited from those pages. Keywords searching, Scrapbook support, naive sharing.

Rated 5 out of 5 stars (9)
0 users

WikiLook Requires Restart

Leading dictionary lookup add-on. Fast, light, open source tool that define words for you without need to open new tabs or windows. Wiktionary&Wikipedia.

Ctrl or Shift or Alt + RightMouseButton click. Now with thesaurus.

70+ languages supported!

Rated 4 out of 5 stars (130)
1 user

Show History Popup

When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.

Rated 4 out of 5 stars (2)
2 users

Bookmark Tools Requires Restart

This Add-on makes it possible to index bookmarks, that includes all typical properties like name, url aso. and the content of the referenced webpage. In this way search queries can browse through the content.

Not yet rated
0 users

DMOZ Bookmarks Requires Restart

Download any dmoz category to your browser bookmarks.

Rated 5 out of 5 stars (3)
0 users

Zorcher Requires Restart

Selecting a small text on the page do not need to copy it into the search bar of your browser or search engine. Just press the right mouse button and select the search service from the available list.

Rated 5 out of 5 stars (10)
1 user

GoodRelations Extension Requires Restart

Context search for product offerings and company profiles with GoodRelations...

FF4 support? - This extension works also with Firefox 4, but you have to install version 0.1.5, which has not been reviewed yet (as of April 6, 2011).

Not yet rated
0 users

Travel VisaHQ Widget Requires Restart

Unique application for checking visa requirements and embassies search. The addon will help in planning your trip. In few seconds you can find out whether you need a visa to the country you want to visit and learn the address of your embassy.

Not yet rated
1 user

Forwarding to the available information resources Requires Restart

The system is designed to redirect from alias with obsolete and invalid network and a local address information resources on the act for which the resource is available. The system can perform advanced search resources.

Rated 1 out of 5 stars (1)
1 user