To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Up & Coming Extensions
SearchLock No Restart
The SearchLock addon detects searches that can be linked to your personal information, then re-directs them to a private, anonymous search results by SearchLock. Also sets SearchLock as your default search.
Video Downloader Prime No Restart
Easily download most popular video formats.
Youtube Mp3 Downloader No Restart
Youtube Mp3 Downloader is one of the fastest and safe services for downloading and conveting files from the popular video hosting link to mp3.
Hide My IP No Restart
Hide My IP is number one tool for hiding your IP and unblocking any web site!
RT Deutsch No Restart
Wir zeigen und schreiben das, was sonst verschwiegen oder weggeschnitten wird. Wir sind DER FEHLENDE PART in der deutschsprachigen Medienlandschaft.
Search - Whaat next No Restart
Mini Search - Whaat next lets you stay update search the web,image,video etc - all from your Firefox new tab.
This wizard creates an XPI that rebrands Firefox, SeaMonkey or Thunderbird. You can change the brand name as well as the brand images and icons.
For those who are looking for and want to find!
Find the most relevant information from the Web with a single request to different search engines and get the results on a single page
Pinterest™ Panel No Restart
Pinterest™ Panel is an easy way to check your Pinterest while you browse.
Grammarly Spell Checker & Grammar Checker No Restart
Spell check and grammar check as you type online. Boost your credibility everywhere you write!
Baixou Agora No Restart
Receive automatic alerts about the best price while you shop online
Custom User-Agent String No Restart
Set custom User-Agent string. Also available for Firefox on Android.
Impero Education Pro No Restart
Provides content authorisation as part of the Impero Education Pro software product.
Barra de busca do Sistema Aptus do Ministério Público Federal
A simple site blocker with whitelist features.
Yandex — Homepage No Restart
Quick access to our search engine and other Yandex services
Disable F12 Shortcut No Restart
Disable F12 Shortcut in Firefox 25 and above.
Adguard AdBlocker No Restart
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
Combo No Restart
Instant web-search in Firefox address bar