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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 PDF Software Downloads: 3,561,661
Facebook Messenger

Facebook Messenger
Free

Facebook Messenger

Chat with Facebook friends from your Mozilla Browser.

Free
Publisher: Baris Derin Downloads: 92,691
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: 86,212
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 Firefoxe browser.

Free
User rating
Publisher: Graugon Downloads: 384,792
DuckDuckGo Plus for Firefox

DuckDuckGo Plus for Firefox
Free

DuckDuckGo Plus for Firefox

Search and get instant answers on your PC.

Free
User rating
Publisher: DuckDuckGo Downloads: 45,261
iMacros for Firefox

iMacros for Firefox
Free

iMacros for Firefox

Automate Firefox, record and replay repetitious work.

Free
Editors' rating
User rating
Publisher: iMacros WebSite Testing and Web Scraping Downloads: 43,295
Flash Video Downloader Youtube Downloader for Firefox

Flash Video Downloader Youtube Downloader for Firefox
Free

Flash Video Downloader Youtube Downloader for Firefox

Download embedded Flash videos from YouTube-type video sharing Web sites.

Free
Editors' rating
User rating
Publisher: FlashVideoDownloader Downloads: 377,189
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: 146,374
Ecosia

Ecosia
Free

Ecosia

Search the Web and support the tree planting program in Brazil.

Free
Publisher: Ecosia Downloads: 10,777
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: 32,918
Results 1 - 10 of 1,621

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.