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If you need to keep an eye on your network's activity then D-Link's monitor widgets could be very useful. Web, wireless and wired network send and receive rates are displayed in real time on an attractive, if somewhat bulky interface. And more in-depth details, like IP addresses of networked devices, security settings, port connections and more are just a click away. You'll need a D-Link DIR router (DIR-625, DIR-628, DIR-655, DIR-825, DIR-855), or the DGL-4500 for the display to work. But the program is available on three widget platforms: Yahoo!, Mac Dashboard and the Windows sidebar.
http://www.dlink.com/widgets