Multi Watcher is a Chrome add-on developed by やまねっこ that allows users to watch multiple videos simultaneously and control the volume using a spatial user interface. With this application, users can open videos in separate Chrome tabs, including popular platforms like YouTube and Zoom, and view them at the same time.

One of the key features of Multi Watcher is its circular icon that can be dragged and dropped to adjust the volume of each video individually. This makes it incredibly easy to switch between videos and adjust their audio levels on the fly. Whether you're multitasking, comparing videos, or simply want to keep an eye on multiple streams at once, Multi Watcher provides a convenient solution.

This add-on is a great tool for anyone who needs to monitor multiple videos simultaneously. Its intuitive spatial UI and simple volume control make it easy to navigate and customize the viewing experience. Multi Watcher is available for free on the Chrome Web Store, making it accessible to all users looking to enhance their video watching capabilities.