Userscripts.org

Hides annoying greybar playlist div at the bottom.

Resize the youtube player just for audio

Removes the "Your Subscriptions" quicklist footer at the bottom of the page in Youtube when watching videos.

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

Changes the way of embedding youtube videos from old 'object' to new 'iframe'

Add [+] to all youtube link and make a box with link; remove all spam ^_^ [applications] on home page;

Search on many websites what Nova Radio is playing and remove useless things. Enjoy.

Displays years which have been spent watching YouTube videos.

Threads Preview + Ads Remove + Youtube Preview + More...

Automatically selects 'Unlisted (anyone with the link can view)' as default privacy option while uploading videos to YouTube

Profanity censor for YouTube.

Replaces Flash-Player with Media Player

Fixes "add to queue" (quicklist) menu on channel pages (in grid view).

Forces YouTube-Videos to play with the new Player

Ignore Flagged Content

Dim page, disable comments, hide sidebar, download videos

Runs on every page and replaces embedded youtube videos with the video set to the highest possible quality

Add links to search in NZBmatrix, BinSearch.info, NZBindex.nl, Trailers, & Subtitles. And show a popup window when moving the mouse over any movie page link with the movie info.

A dirty hack of YouTube HD (http://userscripts.org/scripts/show/77951) to make it work with Opera. There may be a better way to do what this script does, but hey, at least it works. MAKE SURE YOU SAVE IT WITH ONLY .js, AND NOT .user.js AT THE E...

Select playback quality for YouTube videos automatically (720p by default), support both HTML5 and Flash player on all major browsers.

Colors Youtube videos depending on their ratings.

Cleans junk and ads on youtube. Puts search in two columns. Enjoy. Give feedback, reviews, and new features you want.

Adjust the video player to your screen in a cinema-like aspect.

Auto Embed Video from link (codename: EmbeVi) auto embeds videos from a list of 155 sites. Works on FireFox, Opera and Google Chrome

Modifies the Google homepage to imitate go.infinise.com giving the user the ability to click the Google logo or press the UP key and change the website they search (i.e. Bing, Wikipedia, Twitter and YouTube)

FREE PLAYER / REPRODUCTOR LIBRE Change your 'flash player' for convesional video player. I recommender any free version (VLC, MPlayer, Totem, etc)

Run local applications from web browser (linux oriented)

Uses CSS to fix positioning of <video> tags created by ClickToFlash on Youtube (For use with GreaseKit and ClickToFlash on Safari) Adds native support for clicking timecodes in comments by replacing the built-in function on YouTube. The <video>...

A simple script to automatically press "submit" on a google login page if the fields are autofilled by the browser.