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Booking.com
Booking.com: Over 870,095 hotels in 187 countries. Get great deals on accommodation in over 41,000 destinations worldwide. Book your hotel now!
Windows Desktop gadgets search - GadgetsKit.com
Search free Desktop Gadgets For Windows 7, Windows 8, Windows 10 and Vista at GadgetsKit.com
Startpage HTTPS Privacy Search Engine
Add Startpage - The World's Most Private Search Engine - to your search box. Startpage does not record your IP address. Search the Web in the best possible privacy!
Amazon.com Quick Search with Suggestions
Quick Search on Amazon.com with suggestions.
Amazon.com: Online Shopping for Electronics, Apparel, Computers, Books, DVDs, Housewares, Furniture, Sporting goods, Personal care & more.
British English Dictionary (Marco Pinto)
A fork of Mark Tyndall's add-on, based on David Bartlett's
British Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey.
V3.3.6 has 140 000+ new words and also fixes.
English United States Dictionary
English United States (en-US) Dictionary as shipped with Thunderbird 115 ESR and Firefox 115 ESR.
YouTube
This add-on will add an improved version of YouTube's search engine, now with search suggestions!
Thanks all who voted for helping this add-on to become public! Please keep leaving feedback!
German Dictionary
German Dictionary (new Orthography) for spellchecking in Mozilla products
Brazilian Portuguese Dictionary (New Spelling)
The same spellchecker shipped with the Brazilian version of Firefox.
DuckDuckGo (HTTPS / SSL)
DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension adds DuckDuckGo (HTTPS / SSL version) to the search bar. For more features, see the DuckDuckGo Plus add-on. Enjoy!
German dictionary (de_DE)
German dictionary igerman98 (de_DE, Germany), for Firefox, Thunderbird und Seamonkey.
Baidu
Baidu Search is the leading Chinese search engine for websites, audio files, and images. This search plugin uses powerful Baidu search engine and supports Baidu Suggest in Chinese
Polish Spellchecker Dictionary
Polish spell-check dictionary for Firefox, Thunderbird and SeaMonkey.
Bing
This is the only officially supported Bing add-on, provided by the Bing team in Microsoft.
Bing is a search engine that finds and organizes the answers you need so you can make faster, more informed decisions.
Firefox Input
Use this add-on to perform a search for Desktop Firefox Beta feedback!
To create your own collections, you must have a Mozilla Add-ons account.