Keysmith - Create custom keyboard shortcuts for your Mac and the web
ImprovedTube - Allows you to improve and enhance Youtube visually or enable dozens of new features permanently or...
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Magic Actions for YouTube - Magic Actions is an extension that changes the way you’ll watch videos on YouTube.
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
Iridium by ParticleCore - Iridium is an extension built to improve the user experience on the new YouTube Material layout.