Espruino can do GSM using AT commands - so it works on stuff like SIM900. I'm not 100% use if that's been compiled into the ESP8266 port though, however it would work on something like the Espruino Pico or Wifi boards.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Espruino can do GSM using AT commands - so it works on stuff like SIM900. I'm not 100% use if that's been compiled into the ESP8266 port though, however it would work on something like the Espruino Pico or Wifi boards.