Modem Diagnostics for Win95/98/3.1 Dos
Shareware distribution point for Modem Doctor modem diagnostics and many hard-to-find items related to modems and serial ports including configuration and troubleshooting
http://www.modemdoctor.com

GRE America, Inc
manufacture of scanner receivers, lcd modules, psr-500, psr-600, radio modems, scanner antennas, wireless bridge and scanner pre-amps.
http://www.greamerica.com

Bytel, Inc.
Bytel's Trunking Data Modem efficiently automates remote functions over trunked radio networks.
http://www.bytel.com/trunking_modem.htm

Cable Modem Centre
UK specific cable modem news with guides to help with your cable modem.
http://www.cable-modems.co.uk

SoftCab Inc.
Record phone calls to PC. Store telephone conversations as WAV records
http://www.modemspy.com/

Modemsite.com
Modemsite.com (formerly 56k=v.Unreliable): Internet Connectivity, Modem Drivers, Troubleshooting Connection Problems. This is the Top page of the site.
http://modemsite.com/

Smart Link
Specializes in modem technology, including riser, PCI, and USB modem chipsets and drivers.
http://www.smlink.com/

Drivers for the Motorola SM56 modem
SM56 is a model of modem of Motorola. Cranium Inc, is a softare development firm dealing with Linux consultancy and other software solutions for both Linux, and windows platforms. We deals patch for SM56 in Linux, Application Software, Web Site Development at Cranium Inc
http://www.geocities.com/rajeshkizhuveetil/

PacComm Packet Radio Systems
GPS receiver,packet modem and micro controller device to controll external RF transmitters.
http://www.paccomm.com/main.html

Linux Drivers for Mobitex
Kernel modules which implement the MASC protocol that is required to interact with a Mobitex radio modem.
http://users.footprints.net/~kaz/mobitex.html