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Ubuntistas menu Requires Restart
A menu for easy browsing the Greek Ubuntu sites and not only.
Zhong Wen Requires Restart
Mouse over a Chinese character to find out it's meaning. A popup will appear showing the 'Pinyin' pronunciation, the simplified character form, and the English translation. You can customize what parts to show on the preferences window.
lolifox - Fierr MOD Requires Restart
Replaces the error page with a lolifox appearance with additional features.
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!
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.
Look Up in Dictionary Requires Restart
Looks up a selected word in OS X's Dictionary.app
RSE Tools Requires Restart
Tools for working with rapidshare and links from other popular file hosting and sharing services.
Features: get rapidshare links from a page, test selected rapidshare links, search rapidshare files for selected terms, etc.
Paste to Tab and Go Requires Restart
Paste URL or text to any tabs or a new tab and load it immediately, like 'Paste & Go' feature, but unlike 'Paste & Go', this extension will paste text from clipboard to a tab without focusing on the tab first.
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.
Find In Numbers Requires Restart
Find out how many phrases match your search
DMOZ Bookmarks Requires Restart
Download any dmoz category to your browser bookmarks.
XUL/Migemo Requires Restart
This provides dictionary-assisted search (Migemo search) and regular expression powered search for "find in this page" and other features.
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.
PackageMapping.com Extension Requires Restart
Track and Map packages from the right-click menu...
Define Requires Restart
Search the definition of the highlighted text at Google...
SearchWith Requires Restart
Search selected text with various search services...
Advanced Dork: Requires Restart
Advanced Dork: gives quick access to Google's Advanced Operators directly from the context menu...
GDirections Requires Restart
Finds directions on Google and Yahoo Maps based on your selected text and one of various home addresses that you can store.
To create your own collections, you must have a Mozilla Add-ons account.