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ConQuery Requires Restart
Context searching for everyone and URL manipulation tool for advanced users...
lolifox - Fierr MOD Requires Restart
Replaces the error page with a lolifox appearance with additional features.
Advanced Dork: Requires Restart
Advanced Dork: gives quick access to Google's Advanced Operators directly from the context menu...
Search IP Requires Restart
This plugin adds three links to Firefox's context menu that lookup the selected IP address at Project Honey Pot, Utrace, spamhaus, senderbase,...
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.
mid Requires Restart
More than 2000 dictionaries in 270 Kilobyte! Search multiple dictionaries at once!
Babylon Dictionary Word Search Requires Restart
Find the definition for a selected word in a web page or an email.
Right click over the selected word, choose the option "Search in Babylon" and that's it! You will have a new window with the definition of the selected word.
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.
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.
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!
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.
googlebar Requires Restart
The original (though unofficial) Google toolbar for Firefox, with an emphasis on easy access to many types of specialized searches.
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.
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.
ע\ع (Ayn\Ayn) Lookup [former ע\ع Converter] Requires Restart
GP text research tool: transliterates Arabic/Syriac/Aramaic texts to Hebrew writing system, uses Wikipedia as a dictionary utilizing ¨see in anther language¨ links. Interface to dictionaries and encyclopedias. Select a text and use the context menu.
To create your own collections, you must have a Mozilla Add-ons account.