TCPView See a listing of all open TCP and UDP ports with this graphical tool that implements a subset of Netstat's functionality. Source code to the command-line version, netstatp, is even included. If you are unsure about which version of your Windows operating system you are using, this utility will inform you. This program can display the current uptime and other stats of your system such as cpu speed, total ram, free ram and much more. This service allows you to determine whether your operating system is compatible with your serial bus.
Full source is included.
VxDMon VxDMon provides a look into Windows 95 VxDs. See how VxDs interact with one another and monitor the performance of VxD services, including your own. This program reveals some of them. This utility shows how much life is left in your laptop batteries. This gives advice on how to tweak your system to just how you want it.