Keyboard firmware for Atmel AVR and ARM controllers
Object-oriented library for Atmel AVR family MCUs
The FastLED library for colored LED animation on Arduino
Pretty print wrapper for avr-objdump
Optimized firmware for RepRap 3D printers based on Arduino platform
Lightweight generic ring buffer manager library
Soft I2C Universal Arduino AVR or 8051 Device for Arduino(R) IDE
7 seg universal Arduino Ardui89 AVR 8051 Device Driver 89C51 89C52...
Soft SSD1306 by I2C AVR or 8051 Universal Arduino(R) IDE
LiquidCrystal Universal LCD Library for Arch 8051 / AVR Arduino(R) IDE
An USB programmer for PIC, dsPIC, AVR, serial memories
Open-source keyboard firmware for Atmel AVR and Arm USB families
Library designed for the Arduino Uno platform and AVRPascal editor
micro kernel in assembler for AVR devices
PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
Firmware development framework for ATmega/AVR
EEPROM and FLASH Labraries for Arduino IDE with Ardui89
amforth is an extendible interpreter on microcontrollers