List of Firefox add-ons with 2-2.99 stars

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.

1,604 results. Page 1 of 65.
Cisco Webex Extension
#1, Cisco Webex Extension
Cisco Webex Extension
Cisco WebEx
Join Webex meetings using Firefox ™
2.88 (313)
1,019,402
Maps Assist & Custom Web Search
#2, Maps Assist & Custom Web Search
Maps Assist & Custom Web Search
MapsAssist
Install the Maps Assist & Custom Web Search extension to get directions by clicking the favicon on the toolbar & enjoy Yahoo® search from your browser.
2.33 (3)
159,216
Merlin
Converter Suite & Custom Web Search
#3, Converter Suite & Custom Web Search
Converter Suite & Custom Web Search
ConverterSuite
Add the Converter Suite & Custom Web Search extension to convert files by clicking the favicon on the toolbar & access Yahoo® search from your browser.
2.33 (3)
82,312
Yandex.Bar
#4, Yandex.Bar
Yandex.Bar
Yandex
Advanced toolbar for Firefox
2.28 (256)
58,377
Stylish - Custom themes for any website
#5, Stylish - Custom themes for any website
Stylish - Custom themes for any website
userstyles.org
Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.
2.81 (930)
37,916
Zamu
#6, Zamu
Zamu
Zamu
Zamu automatically finds coupons, applies the best coupon code at checkout & earns you cashback.
2.67 (18)
33,254
Ezy Speed Test & Custom Web Search
#7, Ezy Speed Test & Custom Web Search
Ezy Speed Test & Custom Web Search
Ezy Speed Test
Add the Ezy Speed Test & Custom Web Search extension and click the favicon on your toolbar to access a speed test site & Yahoo® search.
2.33 (3)
30,835
Browser Security Plus
#8, Browser Security Plus
Browser Security Plus
ManageEngine
Manage Mozilla Firefox using Browser Security Plus extension
2.00 (4)
30,721
Eno®  from Capital One®
#9, Eno® from Capital One®
Eno®  from Capital One®
Capital One
Shop more securely through your desktop browser with Eno®, your Capital One® assistant.
2.85 (598)
28,595
Song Identifier
#10, Song Identifier
Song Identifier
losnappas
Music recognition. Like shazam or soundhound.
2.90 (430)
27,636
Merlin
マイナポータル
#11, マイナポータル
マイナポータル
デジタル庁
様々なオンライン行政サービスで、マイナンバーカードを利用するためのアプリケーションです。
2.84 (164)
26,480
Save as PDF
#12, Save as PDF
Save as PDF
Pdfcrowd Team
Lets you download web pages as PDF in one click.
2.73 (258)
24,496
YouTube mp3 Downloader
#13, YouTube mp3 Downloader
YouTube mp3 Downloader
Youtube Download Tool
The YouTube mp3 Downloader Add-on includes a Button on any YouTube Page and allows you to convert the YouTube Video to a mp3 with just one click. Compatible with new FireFox Quantum 57+
2.75 (498)
23,011
GMX MailCheck for Firefox
#14, GMX MailCheck for Firefox
GMX MailCheck for Firefox
1&1 Mail & Media GmbH
Mail notifier for multiple email accounts
2.85 (131)
18,336
Screen Recorder
#15, Screen Recorder
Screen Recorder
Bernard
Record your computer's screen with just one click!
2.94 (33)
17,937
Bulk Media Downloader
#16, Bulk Media Downloader
Bulk Media Downloader
InBasic
Grab and download media (image, audio, and video) resources by monitoring network (like FlashGot or Flash video downloader extensions)
2.06 (681)
17,465
ColorfulTabs
#17, ColorfulTabs
ColorfulTabs
Shivanand Sharma
The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.
2.59 (488)
15,693
Lean Library
#18, Lean Library
Lean Library
Lean Library
The Lean Library extension is a free tool which assists your library in delivering their services directly into your research workflow in more ways than one!
2.96 (48)
14,202
Tile Tabs WE
#19, Tile Tabs WE
Tile Tabs WE
DW-dev
Take tabs from parent windows and arrange them in layouts of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll. Save and re-open layouts.
2.85 (325)
11,881
Color Picker
#20, Color Picker
Color Picker
Mark Lumnert
Search for the perfect color via an stylish color picker in a popup.
2.70 (20)
10,716
X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)
#21, X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)
X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)
Byungwook Kang
Notifier for gmail, yahoo, hotmail, aol and more webmails. X-notifier(aka WebMail Notifier) checks your webmail accounts and notifies the number of unread emails... Supports : gmail, yahoo, hotmail, and more
2.89 (414)
9,582
Live Stream Downloader
#22, Live Stream Downloader
Live Stream Downloader
Chandler Stimson
Download M3U8 HLS Streams (HTTP Live Stream) to your local disk
2.94 (32)
9,265
Theme Font & Size Changer
#23, Theme Font & Size Changer
Theme Font & Size Changer
Baris Derin
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
2.23 (218)
7,455
Teleparty
#24, Teleparty
Teleparty
Teleparty
Watch Netflix, HBO Max, Prime Video, Disney Plus, Hotstar, Hulu, Paramount Plus and Peacock TV Together In A Sync
2.08 (24)
7,219
Seznam Doplněk – Email
#25, Seznam Doplněk – Email
Seznam Doplněk – Email
Seznam.cz, a.s.
Seznam Doplněk – Email vás upozorní, když přijde nový e-mail, a zjednoduší práci s více Seznam účty.
2.21 (48)
7,155
1,604 results. Page 1 of 65.