Disable Youtube's autoplay setting by checking if it's enabled every 10 seconds and clicking the button if so.

Pins the video player in its original position while you scroll the page.

Control autoplay in your playlists

Youtube related videos without recommended or featured ones.

Prevent sites from hijacking the middle mouse button for their own purposes

Tries to turn embedded Youtube videos into thumbnails - this is based on "Stop Overzealous Embedding" https://openuserjs.org/users/ConnorBehan

Block loading of videos/audio (flash or html5) at the site being visited. Click to enable once, alt-c to enable for site permanently.

Display the remaining time of a YouTube video during playback.

The 320 kbps YouTube mp3 addon generates a MP3 button on YouTube.com. Convert YouTube to mp3 and download the file to your device.

Show youtube music tab

Adds the likes/dislikes light-saber to YouTube thumbnails, so you can avoid watching crap videos. Activates when mouse passes over a thumbnail.

Download Audio from Youtube in MP3

Disables the Red Bar feature on YouTube so some user-scripts work

Magically like YouTube videos from channels you subscribe to.

Youtube.com Auto-confirm, Auto-Playnext, Auto-Fullscreen-Resume Tested with Firefox for fullscreen to work goto about:config -> full-screen-api.allow-trusted-requests-only = false

Automatically likes videos of channels you're subscribed to

Hide the default playlists in the navigation on the left side of Youtube

Puts the video title in the location bar of all YouTube video pages. Now with extra features add scrollbars, animate thumbnails, reduce font sizes and un-float the header.

Auto-skips blocked, removed and disabled videos while binge watching a playlist in fullscreen mode.

Dynamically adjust video playback speed & seeking instantly with your mousewheel, no more need to go through player menus every time.

Easily remove items from your YouTube subscription feed with a single click

opens youtube videos in TV(https://www.youtube.com/tv#/) mode. other pages like http://www.youtube.com/feed/subscriptions will open in their default desktop view. TV playback seem to be only avaliable to MSE compatible browsers like latest stable Chrome or Nightly Firefox

adds a new button next to like that quick adds / removes the active video from your "Watch later" playlist

Adds the ability to block videos from specific channels and users

Download YouTube videos and audios for free without external service, convert YouTube to all formats.