Heeii is a browser plugin that shows you a number of tweets that are closely related to the web page you are currently viewing. After installing, Heeii appears as a bar at the left side of your browser screen. Moreover, you can connect Heeii to your own Twitter account. By doing so, Heeii shows the latest tweets on your personal Twitter page. Also, you can tweet directly from Heeii. You can disable Heeii whenever you want.