Endless Video - Loop YouTube video, Split and repeat partial YouTube videos
ImprovedTube - Allows you to improve and enhance Youtube visually or enable dozens of new features permanently or...
Looplabs - Looplabs is a cloud based music studio that lets you make music anywhere, anytime TOGETHER.It’s where music goes to play.
Enhancer for YouTube - Tons of features to improve your user experience on YouTube™!
corntab - CRONTAB EDITING MADE SIMPLE
Magic Actions for YouTube - Magic Actions is an extension that changes the way you’ll watch videos on YouTube.