YouSearch is an useful extension for Google Chrome which lets you to search and watch YouTube videos without actually leaving the current page. With this extension, users need not open a new window or tab in Chrome, instead they can easily search and then watch YouTube videos. Once installed, it opens up a small pop up window where you can search and then select any videos.
The window provides necessary options to play the video and also shows you the related videos in the bottom section. The extension supports HD video and a larger viewing screen.
Apart from this, there is also an option to upload YouTube videos, there is a link provided at the bottom.
Overall YouSearch is a good extension for YouTube users.