Scry

Scry is a desktop IN-AND-OUT board, providing an instant reference of who's in or out of your organisation. Ideal for businesses that operate with a LAN, Scry tells you where your colleagues are, without you having to leave your desk.
While running Scry, any user on your network simply chooses their status from a list including, "Away from desk", "In a meeting", "Do Not Disturb" and others as well as custom statuses.