NetTraffic allows you to view and to be informed of download speed and upload speed in real time. Select a Network Interface Card (by eg. Fast Ethernet Card, Wireless Card...), and instantly it displays the network traffic (graphic bars and animated icon if you choose this option).

The "Options" button opens NetTraffic options: bars/icon scale, max values, refresh time, you can display the speeds in window title.
With the "System Tray" option, balloon tips appear in the taskbar tray; you can choose the condition to display the message (eg. if download speed >= 1000 KB/s).

This program works with all version of Windows except Windows 98 and Windows Me. If your system is Windows XP or older, it requires the Microsoft .NET Framework 2.0 or higher.