The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.
Control- and Status-Utility for Tr*ndCh*p-based ADSL-modems. It allows to access the devices' console-service and retrieves their current staus. For example those TC3084 devices are supported: Lucent CELL 19A-BX, Speed Modem 50B(+) and 200 by Arcor.