Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
290,089 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
290,054 users
French spelling dictionary
Spelling dictionary for the French language.
288,295 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
282,109 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
278,764 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
278,034 users
272,750 users
Russian spellchecking dictionary
Russian spellchecking dictionary
270,403 users
Zoom Extension
Recommended, support FireFox 45+. The Zoom Firefox Extension allows participants to schedule Zoom cloud meetings directly from Google Calendar. you can start an instant meeting or schedule a future meeting via a button.
259,908 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
244,680 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
243,262 users
Language: 正體中文 (Traditional Chinese)
Firefox Language Pack for 正體中文 (zh-TW) – Traditional Chinese
240,347 users
Coupert - Automatic Coupon Finder & Cashback
Coupert automatically finds coupons, applies best coupon code at checkout & gives you cashback.
236,645 users
233,333 users
Language: Svenska (Swedish)
Firefox Language Pack for Svenska (sv-SE) – Swedish
231,397 users
230,014 users
Google Translator for Firefox
With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.
226,848 users
Language: Magyar (Hungarian)
Firefox Language Pack for Magyar (hu) – Hungarian
223,170 users
218,512 users
Language: Suomi (Finnish)
Firefox Language Pack for Suomi (fi) – Finnish
218,473 users
Language: Català (Catalan)
Firefox Language Pack for Català (ca) – Catalan
217,498 users
Startpage
This extension protects users from being tracked while allowing them to search the web in complete private mode.
216,448 users
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. V3.3.2 has 140 000+ new words and also fixes.
213,070 users
Keepa.com - Amazon Price Tracker
→ Price History charts → Price Drop & Availability Alerts → Over 1 billion tracked products → Supports Amazon .com | .co.uk | .de | .co.jp | .fr | .ca | .it | .es | .in | .mx
211,738 users
Language: Ελληνικά (Greek)
Firefox Language Pack for Ελληνικά (el) – Greek
211,581 users