Watched for Youtube is a free Chrome extension developed by arismelachroinos. As the name suggests, this extension allows users to track the videos they have already watched on YouTube. With this extension installed, users can easily identify which videos they have already seen by the addition of a "Watched" label on the thumbnail.

It's important to note that Watched for Youtube is an independent extension and not affiliated with YouTube itself. The developer has put a lot of time and effort into creating this useful tool, which can greatly enhance the YouTube viewing experience. If you find this extension helpful and would like to support the developer, there is an option to donate via the provided PayPal link.

Overall, Watched for Youtube is a handy Chrome extension for those who want to keep track of the videos they have already watched on YouTube. It provides a simple yet effective way to identify watched videos and enhance the overall browsing experience.