* [[MicroLink Multi-Speed Modem]] ([[MicroLink]])
* [[Mini-Max Modem]] ([[KDS_Electronics]])
* Prestel Link (acoustic coupler bundled with [[Cirkit serial interface]]) ([[Cirkit]])
* [[Schneider BTX Modul]] (for german Bildschirmtext) (Schneider)
* [[Loritel]] (for french Minitel) (Loriciels)