TCP Viewer captures and displays all data that is transferred between client processes and a server process communicating through TCP/IP. The processes can be running on the same machine or different machines located anywhere on a network or the Internet. TCP Viewer can run on a machine different than the machine(s) that the processes are running on. An example of a client and server is a web browser and web server.

An employee in and out board and a secure instant messaging system. With Roll Call, you only need to remember to change it when you leave your desk, not when you return. When you click your mouse or type on your keyboard for the first time after being away from your desk, Roll Call will automatically change your status to "desk". If you happen to leave your desk and forget to change your status, Roll Call will change it to "idle".