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Firefox Add-ons & Plugins for Windows

Firefox Add-ons & Plug-ins, also called Firefox add-ons or Firefox extensions, are mini software programs that... more
Firefox Add-ons & Plug-ins, also called Firefox add-ons or Firefox extensions, are mini software programs that let users add functionality to or change the look of the Mozilla Firefox Web browser. Add-ons can enhance existing features or add new ones entirely. Firefox plug-ins work with more specific technology--popular plug-ins enable Flash games, PDF viewing, or Windows video.
PDF Download

PDF Download
Free

PDF Download

Open, download, or view Adobe Acrobat files as PDF or HTML files in your browser.

Free
Editors' rating
User rating
Publisher: Nitro Software Downloads: 3,728,674
Password Finder

Password Finder
Free

Password Finder

Add a find function to password manager.

Free
Editors' rating
User rating
Publisher: Kenneth Che Downloads: 136,470
Firefox Video Download Helper

Firefox Video Download Helper
Free

Firefox Video Download Helper

Download and convert Web videos from hundreds of YouTube-like sites right from Firefox browser.

Free
User rating
Publisher: Graugon Downloads: 406,752
DuckDuckGo for Firefox

DuckDuckGo for Firefox
Free

DuckDuckGo for Firefox

Search and get instant answers on your PC.

Free
User rating
Publisher: DuckDuckGo Downloads: 60,514
Facebook Messenger

Facebook Messenger
Free

Facebook Messenger

Chat with Facebook friends from your Mozilla Browser.

Free
Publisher: Baris Derin Downloads: 103,094
Tamper Data

Tamper Data
Free

Tamper Data

View and edit HTTP or HTTPS headers and post parameters.

Free
Editors' rating
User rating
Publisher: Adam Judson Downloads: 94,017
Easy Youtube Video Downloader Express

Easy Youtube Video Downloader Express
Free

Easy Youtube Video Downloader Express

Direct download Youtube videos in Full-HD MP4, FLV, 3GP and MP3 high-quality.

Free
User rating
Publisher: VideoTech Downloads: 37,662
Super Mario Bros. 3 Firefox theme

Super Mario Bros. 3 Firefox theme
Free

Super Mario Bros. 3 Firefox theme

Add a retro videogame theme to Mozilla Firefox.

Free
Editors' rating
User rating
Publisher: freewally (Andrea Gnesato) Downloads: 159,787
Hola for Firefox

Hola for Firefox
Free

Hola for Firefox

Access websites blocked in your country, company or school.

Free
User rating
Publisher: Hola Downloads: 153,724
Video DownloadHelper

Video DownloadHelper
Free

Video DownloadHelper

Download video and image files from various sites easily.

Free
Editors' rating
User rating
Publisher: Michel Gutierrez Downloads: 378,387
Results 1 - 10 of 879

About Firefox Add-ons & Plugins

Firefox Add-ons & Plug-ins, also called Firefox add-ons or Firefox extensions, are mini software programs that let users add functionality to or change the look of the Mozilla Firefox Web browser. Add-ons can enhance existing features or add new ones entirely. Firefox plug-ins work with more specific technology--popular plug-ins enable Flash games, PDF viewing, or Windows video.