Userscripts.org

Adds the national flag icons next to each username in the comment section of Youtube.

Changes javascript links into direct links

Adds a menu under YouTube video with available MP3 files found on ZippyShare and Hulkshare.

Pauses the video when you click anywhere on it

Make the YouTube dislike bar red again.

Automatically pauses the video when you switch to a different tab or window, and automatically plays when you come back to it

Adds a button that redirects to KeepVid's YouTube download service for the video you are currently watching.

Adds extended functionality to the youtube player such as player refreshing if video stops loading, user specified seek ahead, stop video loading, and more

Enhances your pirating experience by adding torrent links to iMDB, Rotten Tomatoes (and MovieFone, soon).

Hides comments, preserves brain cells. Click headers to toggle.

Skips the das captcha page on YouTube

Gets right of the footer, copyright, google ads, big frontpage ad, side announcement box, "may not be suitable for minors" warning, and other annoyances.

Strips youtube videos, flash objects, iframes, custom styles, and applications from profiles

Shows a high quality link by the description of a video.

Makes youtube in HD.

Changes download button to FLV video file on Extreme Tube. Use with a download accelerator like free download manager means videos are downloaded in no time.

Switches to YouTube's HQ version quickly (no reloading)

Several customizable options. Special support for Userscripts.org (new interface, fix for pre tags, and allows you to hide the install warning box and footer) Changes text fields, buttons, links, selects, and text areas.

Adds a button above the player to reload it

Removes unnecessary parameters from links like feature=channel

Removes video advertisements

Completely removes the annoying gray playlist at the bottom of YouTube. (In opposition to just hiding it.)

Download Youtube Videos (HD 1080p & 720p/HQ MP4, Mp3, FLV, 3GP) Dailymotion (HQ MP4, FLV), Magavideo (HD/HQ FLV) Google (HQ MP4, FLV), Vimeo (HQ MP4) Break (HQ MP4, FLV), Veoh (HQ MP4, FLV), Metacafe, Spike, Myspace, Facebook, Current, Redtube and...

Buffers the video without autoplaying and puts it in hd if the option is on

Adds &fmt=18 to the url for high quality but not if any &fmt=x already exist and adds &fmt=18 to all the links

FreeTube débride les vidéos Youtube pour ne plus qu'elles galèrent leur race quand on est chez Free ;) Lisez bien le paragraphe "Informations sur FreeTube" plus bas pour en connaitre toutes les fonctionnalités !

Adds FLV, MP4, 3GP, and 720p download links to YouTube.

Shows hidden thumbed-down comments that can't normally be seen

Adds a "By Date" button next to the search button

Removes main youtube ads, does not remove in-video ads.