TinyGSM

Compatible with over 30 modems from major manufacturers like SIMCom, Quectel, u-blox, and ESP8266/ESP32, as detailed in the Supported modems list, reducing vendor lock-in.

Optimized for small memory usage; the WebClient example uses only 15022 bytes (46%) on Arduino Uno, leaving more space for application code, as shown in the 'TinyGSM is tiny' section.

Wraps modem AT commands into the standard Arduino Client interface, enabling easy integration with libraries like PubSubClient for MQTT and HTTPClient, mentioned in Arduino Client interface support.

Includes support for SMS, USSD, voice calls, and GPS on supported hardware, enhancing features beyond basic data connectivity, as outlined in the Features section.