An ESP8266 based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators

ATLib is a C# library that makes it easy to communicate with modems.

A Pico W based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators

Hayes Modem emulator for Raspberry Pi

Old school Arduino modem, Bell 103 compatible, at 300 baud

Hayes modem emulation for ESP8266 modules

The AT Emulator can emulate a communication device, like a modem. The AT interface can be accessed through the console, a TCP or telnet connection or a virtual COM port.

REST-API for GSM functionality

Hayes modem emulation for Arduino / Ethernet modules

From Minitel in Golang with ❤️

tcpser-1: Hayes modem emulator application

Extensible C library to integrate a AT-command host in your project

Kodi / XMBC / Firestick audio addon for Why Is This Happening with Chris Hayes