Language: العربية (Arabic)
Firefox Language Pack for العربية (ar) – Arabic
301,261 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
297,715 users
Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
295,796 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
295,103 users
289,139 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
276,111 users
Russian spellchecking dictionary
Russian spellchecking dictionary
275,561 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
268,037 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.
260,102 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
254,531 users
Coupert - Automatic Coupon Finder & Cashback
Coupert automatically finds coupons, applies best coupon code at checkout & gives you cashback.
253,484 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
252,218 users
Language: 正體中文 (Traditional Chinese)
Firefox Language Pack for 正體中文 (zh-TW) – Traditional Chinese
249,854 users
246,892 users
243,116 users
Language: Svenska (Swedish)
Firefox Language Pack for Svenska (sv-SE) – Swedish
240,469 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.
235,931 users
232,213 users
Language: Magyar (Hungarian)
Firefox Language Pack for Magyar (hu) – Hungarian
230,970 users
Language: Suomi (Finnish)
Firefox Language Pack for Suomi (fi) – Finnish
227,949 users
Language: Ελληνικά (Greek)
Firefox Language Pack for Ελληνικά (el) – Greek
223,796 users
Startpage
This extension protects users from being tracked while allowing them to search the web in complete private mode.
222,508 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. V3.3.0 has 140 000+ new words and also fixes.
217,594 users
Language: Norsk Bokmål (Norwegian Bokmål)
Firefox Language Pack for Norsk Bokmål (nb-NO) – Norwegian Bokmål
212,479 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.
211,969 users