Downloading and File Management
MR Tech Toolkit Requires Restart
(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.
Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...
Tooltip Plus Requires Restart
Show tooltips for links and images with URLs, icons, alt text, and long titles.
AutoProxy Requires Restart
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
NetVideoHunter Requires Restart
This add-on is a downloader that lets you easily download videos from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte and music for example from SoundCloud, Grooveshark and from many other sites...
Save Images Requires Restart
Save Images saves the images from the current tab page, from the cache, to a specified location, with either the images original file name or a file name that you specify.
UPDATE: XPI delay has been removed in Firefox 40!
Disable the install delay in Firefox. New 2.0 version now includes GreaseMonkey scripts!
Unlike similar addons, this works on Firefox 4 and beyond.
YouTube Video Download and Convert is the powerful add-on that lets you collect all media information available on YouTube. Advanced power panel lets you download, preview, play with and convert all media right inside Firefox.
Open With for Microsoft Edge sends pages from Mozilla Firefox to Microsoft Edge.
Avoid redirects and has direct access to the sites you want to visit.
Cookie Importer Requires Restart
Imports cookies from a textfile.
Reads Netscape standard cookies.txt files as exported by IE and others.
Very useful in combination with the Cookie Exporter add-on.
Download Flash and Video Requires Restart
Download Flash and Video is a great download helper tool that lets you download Flash games and Flash videos (YouTube, Facebook, Dailymotion, Google Videos and more) with a single click.
The downloader is very easy to use.
Google Keep Notes brings Google Keep right into your Firefox Sidebar.
LookOut (fix version) Requires Restart
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey
Minimeter Requires Restart
Monitor your provider's upload/download usage meter.
Not maintained anymore, looking for a developer, contact me if you're interested.
Preserve Download Modification Timestamp Requires Restart
Preserve the modification timestamp, sent by the server, for downloaded files
MetaProducts Integration Requires Restart
Integrate MetaProducts software with Mozilla browsers. Download links and Web sites using Mass Downloader and Offline Explorer. Save Web pages as you see them for future reference with MetaProducts Inquiry.
User Agent Changer Requires Restart
Adds a menu and a toolbar button to change the user agent of a browser.
Zindus Requires Restart
Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)