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OccultWatcher is a Windows program that helps astronomical occultation observers to stay tuned with the incoming events by tracking the asteroidal occultation predictions published and regularly updated in various sources called feeds. OccultWatcher searches the feeds you have subscribed for, for events that match your specified distance, star magnitude, event duration and other filter criteria. It allows you to announce your intentions to observe an event to all other observers around the world and helps the coordination in a global scale. There are more than 400 registered accounts (of people that announce their observing intentions) and more than 1500 known installations. The account registration and usage as well as the OccultWatcher software are absolutely free.