Userscripts.org

Play selected videos one after another in series. Make up your own auto-playlists from any Youtube videos. This script requires another script called, "Middle-click multi-selected." Install this other script in Grease Monkey and then this script...

Allows middle-click on buttons/javascript links and enables multiple-selection of links/buttons. For multiple-selection: as usual, hold control key down whilst selecting links with left-clicks (or middle-clicks); release control key, then middle-...

Shows ratings & favourite count of all videos on a youtube page(e.g. related videos) . Now don't waste time clicking on crappy videos . The ratings are displayed as a red/green bar below the video. See screenshots inside.

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

Adds access keys to YouTube.

View Facebook at the full width of your browser / widescreen monitor

YouTubeの動画の各コメントに国旗アイコンを表示する / Adds the national flag icons to each video comments in YouTube.

Turn the lights out for easier watching of YouTube videos! Fixed version for FF4 & Google Chrome

Shows the number of times a video has been liked/disliked, without having to (dis)like it.

Stops accidentally navigating away from Youtube videos and losing streaming progress.

Removes the side banner advertisements on Grooveshark. Works with both the Flash (Retro) and new HTML players.

Automatically Empty MySpace Inbox, Trash & Junk

Script that allows opening Youtube Videos in your XBMC installation. Also adds entries to the YT Video "context"-Menu

Permette di scaricare qualsiasi video di Youtube in molti formati da MP4 a quelli in alta definizione 1080p, Compatibile con Greasemonkey, Opera, Chrome e altri. Funziona interamente sfruttando la pagina di Youtube senza contattare alcun sito este...

Removes the advertisement on the top of the Youtube homepage.

Removes the annoying 'Welcome to the #New Twitter' bar at the top of the screen.

Removes any comments with various spellings of podocot

Auto-redirect videos from YouTube, Vimeo, Viddler, and more to Quietube. Now including "pre-direction"!

get http://www.youtube.com/v/XXXXXX

Replaces the default YouTube player with Flowplayer (flowplayer.org). Forked from version 1.2 of Youtube Alternate Video Player by Yansky.

Replaces YouTube videos with a link that submits them to TinyOgg.com. Also provides some TinyOgg automation (see the "DEFINES" section of the code).

Makes links show the full name of the video in the text

Anonymizes YouTube Video Streaming with HideMyAss! Proxy

youtube remove ads and sidebar

Checks if a youtube video is available in your country when you click it, if not you keep watching the actual one and don't get redirected to the error page.

Prevents autoplay. (Alternate)

Adds YouTube search icons to Last.fm tracks and artists

Adds links below the Youtube video to (a) download the video (HD .mp4 file, no converters are used, no external sites) (b) view the video with an embedded external player (like mplayer, totem, or vlc plugins)

YouTubeの検索結果に高評価/低評価の棒グラフを表示する。 / Shows a bar graph of like/dislike rating in YouTube search results.

Hide V3VO branded page elements on Youtube