Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
283,124 users
Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
281,222 users
French spelling dictionary
Spelling dictionary for the French language.
277,855 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
277,787 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
276,676 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
267,916 users
Russian spellchecking dictionary
Russian spellchecking dictionary
266,658 users
264,928 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.
254,488 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
239,100 users
Language: 正體中文 (Traditional Chinese)
Firefox Language Pack for 正體中文 (zh-TW) – Traditional Chinese
235,344 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
234,960 users
Coupert - Automatic Coupon Finder & Cashback
Coupert automatically finds coupons, applies best coupon code at checkout & gives you cashback.
231,212 users
226,751 users
Language: Svenska (Swedish)
Firefox Language Pack for Svenska (sv-SE) – Swedish
226,017 users
223,390 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.
222,994 users
Language: Magyar (Hungarian)
Firefox Language Pack for Magyar (hu) – Hungarian
218,328 users
Language: Suomi (Finnish)
Firefox Language Pack for Suomi (fi) – Finnish
213,475 users
Startpage
This extension protects users from being tracked while allowing them to search the web in complete private mode.
211,711 users
211,702 users
Firefox Relay
Firefox Relay lets you generate email aliases that forward to your real inbox. Use it to hide your real email address and protect yourself from hackers and unwanted mail.
208,933 users
Language: Català (Catalan)
Firefox Language Pack for Català (ca) – Catalan
208,916 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
208,885 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.
207,857 users