YT-Tracker от Gwydth

YouTube Tracker/Timer is a simple Firefox extension designed to help you manage your time effectively. Some of its settings include:

• Block Mode: Blocks the YouTube homepage once your time limit is reached.
• Restrict Mode: Restricts the YouTube homepage by removing thumbnails and content while still allowing searches and video playback once your time limit is reached.
• Notifications: Sends notifications when half or a quarter of your time limit has been reached.
• Lock settings for set periods of time.
• Clean Modern UI

Please be aware that this extension is still under development and currently in beta (so expect bugs). For any issues or feature requests, feel free to create an issue on GitHub:

https://github.com/gwyd0/youtube-timer/issues

For a full source code please view:
https://github.com/Gwyd0/Youtube-Timer