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Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.

There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.

To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.

#1, Language: Interlingua

Mozilla Firefox

Firefox Language Pack for Interlingua (ia)

1.75 (4)

135,383

#2, Language: Ślōnsko (Silesian)

Mozilla Firefox

Firefox Language Pack for Ślōnsko (szl) – Silesian

1.00 (1)

128,254

#3, Language: Ślōnsko (Silesian)

Mozilla Firefox

Firefox Language Pack for Ślōnsko (szl) – Silesian

1.00 (1)

128,254

#4, Earth View 360° & Custom Web Search

Earth View 360

Add Earth View 360° & Custom Web Search to access High Resolution 3D Maps & Yahoo Web Search

1.00 (1)

21,816

#5, Sponsored Search by SearchesCentral

Addons

Get better search results instantly from your home and new tab page!

1.00 (3)

13,658

#6, Video Converter World & Custom Web Search

Video Converter World

Add the Video Converter World & Custom Web Search extension to convert videos via an online video converter tool by clicking the favicon on the toolbar & enjoy Yahoo® search from your browser.

1.00 (1)

12,201

#7, View Recipes & Custom Web Search

View Recipes

Add View Recipes & Custom Web Search extension then click the icon on your toolbar to access Recipe Search plus Yahoo Web Search.

1.00 (1)

9,147

#8, Twitch Ad Blocker

Twitch Ad Blocker

Tired of Ads on Twitch? Block all ads and watch videos without interruptions.

1.87 (63)

7,871

#9, Mapio

FX

Verbessern Sie die Relevanz Ihrer Suchanfragen mit zusätzlichen Inhalten von Mapio.

1.00 (2)

7,100

#10, Login Safely

Login Safely

Get Login Safely & Custom Web Search to Check Login URL's against Safe Browsing List & Get Yahoo Web Search

1.00 (3)

5,516

#11, Mes recettes de cuisine

Cuisine

Améliorez votre recherche Google grâce aux résultats de notre service.

1.00 (1)

3,179

#12, 万能视频下载神器

profession translate

万能视频下载神器是一款视频的抓取、解析下载的扩展工具。应版权方要求，屏蔽腾讯,优酷,爱奇艺,芒果TV,土豆,搜狐,乐视等视频网站视频下载功能

1.00 (1)

3,166

#13, 万能视频下载神器

profession translate

万能视频下载神器是一款视频的抓取、解析下载的扩展工具。应版权方要求，屏蔽腾讯,优酷,爱奇艺,芒果TV,土豆,搜狐,乐视等视频网站视频下载功能

1.00 (1)

3,166

#14, Calendar Planner & Custom Web Search

Calendar Planner

Add the Calendar Planner & Custom Web Search extension to get an easy-to-use calendar planner by clicking the favicon on the toolbar & enjoy Yahoo!® search from your browser.

1.00 (1)

2,888

#15, FastSave for Instagram

FastSave for Instagram

Enjoy the most beautiful downloader for Instagram. Download All Stories & Videos & Photos from Instagram Anonymously. Supports IGTV download and bulk file download from Instagram page.

1.75 (32)

2,677

#16, Utorrent For Firefox

Utorrent

Send Link to Utorrent For Chrome

1.75 (4)

2,523

#17, Cyber-Ark Clipboard Extension

Cyberark.developer

Provides integration for Cyber-Ark products with the user's clipboard. (C) Cyber-Ark Software, Ltd. All rights reserved. Compatible with FireFox versions 66+

1.00 (1)

2,155

#18, Multiple File Downloader

MSI Developers

Downloads multiple files from any page

1.96 (48)

2,117

#19, MyRegistry Ship Address Assist

MyRegistry.com

Save time and effort by copying the shipping address before you begin checkout

1.80 (5)

1,920

#20, MeetInOne Extension for Google Meet

MeetInOne

Enhance your Google Meet experience with MeetInOne for Chrome. MeetInOne is the best Google Meet enhancement extension around and is 100% free.

1.89 (9)

1,862

#21, Pepper | Shopping with Savings

Pepper

Don’t look for discounts anymore! Pepper finds the best ones for you.

1.50 (2)

1,816

#22, Opera Install Chrome Extension

Mxt08

Install extensions from Chrome Web Store. Opera Install Chrome Extension is open-source: https://drive.google.com/file/d/1oelDcvu3FjsI5vCNm83Yk-EDjmZX_4Sb/view?usp=sharing

1.52 (46)

1,654

#23, Audio Recorder

moris

Easily record audio from your computer's microphone!

1.00 (2)

1,534

#24, FormApps Extension

Software602

Rozšíření pro práci s elektronickými formuláři Software602 a.s.

1.00 (1)

1,411

#25, auto resume downloads

Maurice Abney

This extension allows the user to auto resume downloads that have failed due to non-human error. Failed downloads will attempt to resume within one minute of failing. Does not resume downloads that have been cancelled by user or browser close.

1.75 (51)

1,391