MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

A small speech recognizer

Proxmark 3

Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8

Transmit data with sound. Includes binaries for soundcards and .wav files.

Web Framework to build REST APIs, Webservices or any HTTP endpoint in C language. Can stream large amount of data, integrate JSON data with Jansson, and create websocket services

MicroPython for ESP32 with psRAM support

a numpy-like fast vector module for micropython, circuitpython, and their derivatives

foxBMS 2, online documentation at https://docs.foxbms.org