Keysmith - Create custom keyboard shortcuts for your Mac and the web
Enhancer for YouTube - Tons of features to improve your user experience on YouTube™!
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.
Iridium by ParticleCore - Iridium is an extension built to improve the user experience on the new YouTube Material layout.
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
ImprovedTube - Allows you to improve and enhance Youtube visually or enable dozens of new features permanently or...