Downloading and File Management

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Simple YouTube MP3 Button

Adds a small and simple button to YouTube videos that allows you to quickly download the audio of the video as an MP3 file (quality of the MP3 is as high as the video offers) without having to leave the page.

Rated 5 out of 5 stars (28)
26,552 users

Open With Microsoft Edge

Open With Microsoft Edge sends pages from Mozilla Firefox to Microsoft Edge.

Rated 4 out of 5 stars (3)
1,681 users

Open With Adobe Illustrator

Open With Adobe Illustrator is a new companion for web designers, graphic designers and in general whom like to use Illustrator.

Rated 3 out of 5 stars (1)
3,744 users

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

Rated 5 out of 5 stars (4)
13,550 users

Redirect Bypasser

Avoid redirects and has direct access to the sites you want to visit.

Rated 4 out of 5 stars (37)
11,064 users

mozCleaner

Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.

Rated 2 out of 5 stars (6)
2,065 users

cacaoweb Requires Restart

Watch videos without limit

Rated 1 out of 5 stars (1)
2,963 users

AutoSave Plus for ScrapBook Plus / XSidebar Requires Restart

AutoSave is an Add-On to the firefox extension ScrapBook Plus by haselnuss and ScrapBook with XSidebar for SeaMonkey. This is a modified version of the original Add-On. Uninstall the original AutoSave before you use this extension.

Rated 4 out of 5 stars (1)
120 users

BackupHelper Plus for ScrapBook Plus / XSidebar Requires Restart

BackupHelper is an Add-On to the firefox extension ScrapBook / ScrapBook Plus. This is modified version of the original Add-On. Uninstall the original BackupHelper before you use this extension.

Rated 5 out of 5 stars (1)
233 users

Tooltip Plus Requires Restart

Show tooltips for links and images with URLs, icons, alt text, and long titles.

Rated 5 out of 5 stars (18)
60 users

InlineDisposition Reloaded

InlineDisposition Reloaded changes the disposition type of "Content-Disposition" response headers from "attachment" and "file" to "inline"

Rated 4 out of 5 stars (3)
418 users

No More Install Delay

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.

Rated 4 out of 5 stars (12)
675 users

Images uploader for Wampi.ru

Upload any image to wampi.ru image hosting via right click menu

Not yet rated
51 users

Peachphone : virtual phone (Android/iPhone)-like to send image, video, sound, map or text by MMS, SMS or .mobi Requires Restart

http://peachphone.com/release/
Send SMS and MMS worldwide, Video from your webcam, video from Youtube, send photos, manage your contacts (Thunderbird, Outlook, MSN, Yahoo)

Rated 1 out of 5 stars (5)
980 users

MR Tech Disable XPI Install Delay Requires Restart

Disables default delay when installing...

Rated 5 out of 5 stars (16)
203 users

Amazing Media Browser Requires Restart

A Multimedia Download Tool

Rated 3 out of 5 stars (21)
203 users

Extended Link Properties + (obsolete) Requires Restart

This application extends the Link Properties and displays File Size, Last Modified Date, Content Type and HTTP Header of a link...
Warning: developing discontinued, see least

Rated 5 out of 5 stars (14)
693 users

Forwarding to the available information resources Requires Restart

The system is designed to redirect from alias with obsolete and invalid network and a local address information resources on the act for which the resource is available. The system can perform advanced search resources.

Rated 1 out of 5 stars (1)
76 users

Facebook Chat Download

Create a simple html page containing the whole chat. The page will contain only the chat section. All other page elements will be removed. Once the addons ends loading the chat you can save the clean page from your browser.

Rated 2 out of 5 stars (1)
627 users

Minimeter Requires Restart

Monitor your provider's upload/download usage meter.
Not maintained anymore, looking for a developer, contact me if you're interested.

Rated 4 out of 5 stars (49)
567 users