Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
274,774 users
Language: العربية (Arabic)
Firefox Language Pack for العربية (ar) – Arabic
270,791 users
Russian spellchecking dictionary
Russian spellchecking dictionary
264,557 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.
252,005 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
251,476 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
238,127 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
234,258 users
234,088 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
234,083 users
Coupert - Automatic Coupon Finder & Cashback
Coupert automatically finds coupons, applies best coupon code at checkout & gives you cashback.
228,771 users
Language: 正體中文 (Traditional Chinese)
Firefox Language Pack for 正體中文 (zh-TW) – Traditional Chinese
225,644 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
224,287 users
Language: Svenska (Swedish)
Firefox Language Pack for Svenska (sv-SE) – Swedish
222,801 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.
216,791 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.
212,884 users
Language: Magyar (Hungarian)
Firefox Language Pack for Magyar (hu) – Hungarian
211,473 users
Startpage
This extension protects users from being tracked while allowing them to search the web in complete private mode.
210,977 users
Language: Suomi (Finnish)
Firefox Language Pack for Suomi (fi) – Finnish
209,032 users
Language: Ελληνικά (Greek)
Firefox Language Pack for Ελληνικά (el) – Greek
206,945 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. V3.3.5 has 140 000+ new words and also fixes.
206,485 users
Language: Indonesia (Indonesian)
Firefox Language Pack for Indonesia (id) – Indonesian
199,787 users
199,125 users
194,689 users
193,200 users
React Developer Tools
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
193,166 users