Whoisit? is InfoInterActive's nationwide Internet call management system that offers useres an alternative to a busy phone line while they're online. Whoisit? provides real-time notification of incoming calls. It enables users to see who is calling and to handle each call as it occurs using Whoisit?'s call-control features. Every time a call comes in, a pop-up window appears on the computer screen, notifying the user of the call. The user can then see who is calling and manage the call in one of several ways using Call Control options. This program works with most popular Web browsers and Internet Service Providers, including AOL. Service is currently only available in the U.S.