Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
285,665 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
285,188 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
272,981 users
Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
272,275 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
266,058 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
261,503 users
253,193 users
Russian spellchecking dictionary
Russian spellchecking dictionary
251,815 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.
249,870 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
241,889 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
233,692 users
Coupert - Automatic Coupon Finder & Cashback
Coupert automatically finds coupons, applies best coupon code at checkout & gives you cashback.
230,996 users
Language: 正體中文 (Traditional Chinese)
Firefox Language Pack for 正體中文 (zh-TW) – Traditional Chinese
229,028 users
Language: Svenska (Swedish)
Firefox Language Pack for Svenska (sv-SE) – Swedish
220,638 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.
219,810 users
Startpage
This extension protects users from being tracked while allowing them to search the web in complete private mode.
217,412 users
215,362 users
Language: Magyar (Hungarian)
Firefox Language Pack for Magyar (hu) – Hungarian
213,404 users
211,978 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
208,500 users
Language: Ελληνικά (Greek)
Firefox Language Pack for Ελληνικά (el) – Greek
208,113 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. V3.3.3 has 140 000+ new words and also fixes.
207,757 users
Language: Suomi (Finnish)
Firefox Language Pack for Suomi (fi) – Finnish
207,110 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.
206,673 users
205,421 users