Most Popular Extensions
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Quick Locale Switcher Requires Restart
Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.
ViewAbout Requires Restart
Enables access to various about: dialogs from the View menu.
FireFTP Requires Restart
FireFTP is a free, secure, cross-platform FTP/SFTP client for Waterfox which provides easy and intuitive access to FTP/SFTP servers.
Check out my new project, FireSSH!
QuickPasswords Requires Restart
Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.
Now also includes SSO change (multi-domain pw) and Backup + Restore.
Text2Link Requires Restart
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
This Addon simply adds a dropdown button that lets you download YouTube Videos in various Formats. Download YouTube Videos in FLV, 3GP, MP3, MP4, 720p, 1080p in a single click.
User Agent Switcher Requires Restart
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.
SQLite Manager Requires Restart
Manage any SQLite database on your computer.
QuickNote Requires Restart
A simple note-taking extension.
Complete YouTube Saver Requires Restart
Download YouTube videos in various formats including 1080p, 4K etc (DASH formats). Convert audio track from videos to MP3 or WAV, or save audio in native format (Ogg, AAC/M4A, MP3, OPUS). Save YouTube page, video, comments and subtitles to one folder
If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.
Dictionary Switcher Requires Restart
Toggles dictionaries automatically or manually and displays the currently selected one
Gmail Manager NG Requires Restart
Based on Gmail Manager by Todd Long. This fork is intended to a supported version of Gmail Manager since Todd appears to have gone MIA. Manage multiple Gmail accounts and receive new mail notifications.
Copy Plain Text 2 Requires Restart
Copies text without formatting
Signature /Auto Paste /Prefill Fourms Requires Restart
Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )
"Restart" menu and button, with configurable shortcut key.