| esp-iot-core | A framework to implement IoT devices/gateways based on the ESP8266/ESP32 hardware. |
| gpiobj | Manage and access GPIOs as objects. |
| jsons | Read and write JSON documents as a stream. |
| serial-transport | ASCII based protocol to communicate reliably over a serial connection without hardware flow control. |
| toolbox | Collection of common utilities and functions. |
| yatest | Yet another unit testing framework for Arduino libraries and projects. |