Downloading and File Management

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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 4 out of 5 stars (3)
5,727 users

LookOut+ Requires Restart

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 4 out of 5 stars (5)
2,386 users

P7MON Requires Restart

Abilita la gestione alternativa degli allegati P7M

Not yet rated
2,027 users

Google Keep Notes

Google Keep Notes brings Google Keep right into your Firefox Sidebar.

Rated 5 out of 5 stars (1)
1,509 users

InlineDisposition

InlineDisposition changes the disposition of Content-Disposition response headers from attachment to inline; this prevents servers from forcing the browser to save a file and allows that file to be viewed in the browser, if the browser supports it.

Rated 5 out of 5 stars (46)
15,445 users

cacaoweb Requires Restart

Watch videos without limit

Rated 1 out of 5 stars (1)
2,333 users

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 (17)
16,467 users

quickFilters Requires Restart

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

Rated 5 out of 5 stars (26)
12,191 users

Zindus Requires Restart

Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)

Rated 4 out of 5 stars (207)
25,504 users

OpenDownload² Requires Restart

OpenDownload² extends the "Save" dialog by a "Run" button to open the file directly.

Rated 5 out of 5 stars (145)
33,993 users

Open With Microsoft Edge

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

Rated 5 out of 5 stars (3)
1,204 users

Torrent Tornado Requires Restart

A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!

Rated 4 out of 5 stars (77)
46,712 users

User Agent Changer Requires Restart

Adds a menu and a toolbar button to change the user agent of a browser.

Rated 4 out of 5 stars (6)
2,612 users

ALLYouTubeDownloader Requires Restart

ALLYouTubeDownloader extention (FLV/MP4/WebM; HD/HQ). Windows only. Works only with ALL YouTube Downloader 2.3 application or higher (versions 2.2 and lower doesn't work anymore).
Homepage: http://www.allplayer.org/youtube-to-allplayer

Rated 3 out of 5 stars (8)
25,658 users

Preserve Download Modification Timestamp Requires Restart

Preserve the modification timestamp, sent by the server, for downloaded files

Rated 4 out of 5 stars (15)
1,282 users

SaveFrom.net helper all-in-1 / youtube downloader

SaveFrom.net helper will enable you to download files from YouTube.com, FaceBook.com, Vimeo.com, Daylimotion.com, VK.com, Odnoklassnoki.ru, Soundcloud.com and more than 40 other just in one click.

Rated 4 out of 5 stars (237)
161,033 users

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.

Rated 4 out of 5 stars (376)
653,863 users

Youtube Best Video Downloader 2 - MP3 MP4 M4A AAC

Now with 1080p Full-HD Support!

Download every YouTube video you want and you can download them as Full-HD MP4, FLV, 3GP, MP3, M4A and AAC formats. Easy & Fast!

Rated 3 out of 5 stars (44)
120,182 users

YouTube Videos Download in one click Requires Restart

Download YouTube videos by clicking a button underneath videos in YouTube. Save YouTube videos and songs in 1080p (HD) MP4 or FLV format.

Rated 3 out of 5 stars (19)
1,675 users

Download YouTube Videos as MP4

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

Rated 4 out of 5 stars (417)
1,063,200 users