- US Robotics Business Systems
- Motorola V.90 Modems
- Telebit (now Frantel)
- Large list of Modem Companies
Links to more information about modem configuration, protocols, FAQs, etc.:
- Institute for Global Communications (IGC) Modem and Data Communications Page - maintained by Art McGee
- Trumpet Winsock FAQ - Good information on Trumpet Winsock, modems in general, and links to many other useful sites.
- Internet Starter Kit for Macintosh Modem Page - Great information on different brands of modems, including initialization strings.
- Internet Starter Kit for Macintosh, 3rd Edition - Pointer to the book.