- Arduino command line interface in Go
- Dark Arduino Theme
- Arduino - Open-source physical computing platform based on a simple I/O board and a development environment that implements the Processing/Wiring language.
- Servo Library for Arduino
- Arduino Reference (Code)
- Arduino core for the ESP32
- Arduino FIDO2 Authenticator (HN)
- Commanduino Library - Tools to control Arduino boards seamlessly from Python.
- Arduino emulator
- Arduino MIDI Library - Adds MIDI I/O communications to an Arduino board.
- ArduinoBLE - ArduinoBLE library for Arduino.
- Arduino video tutorials (Code)
- 8x8x8 LED cube powered by an arduino
- Arduino Pro IDE - Arduino IDE for advanced users and developers.
- ATtiny Core - Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8.
- Wasmino = WASM and Arduino – Running Arduino Code in Browser (2020) (HN)
- Sinter - Implementation of the Source Virtual Machine Language intended for microcontroller platforms like an Arduino.
- Mozzi - Sound synthesis library for Arduino.
- Arduino Language Server
- Arduino Tools extension for VS Code
- What is like Arduino but more powerful? (2021)
- Why I don’t ‘do’ Arduino (2021) (Lobsters)
- ArduinoFake - Arduino mocking made easy.
- WebSockets_Generic - WebSocket Server and Client for Arduino.
- Arduino IDE 2.0 beta (2021) (HN)
- JeeLib - Arduino IDE: Ports, RF12, and RF69 drivers from JeeLabs.
- Monitoring my home's air quality (CO2, PM2.5, Temp/Humidity) with AirGradient's DIY sensor (2021)
- ArduinoCore-API - Hardware independent layer of the Arduino cores.
- SoftWire - Software I2C implementation for Arduino and other Wiring-type environments.
- Arduino core for ESP8266 WiFi chip
- TinyGSM - Small Arduino library for GSM modules, that just works.
- ArduinoJson - JSON library for Arduino and embedded C++. Simple and efficient.
- ESP8266 Deauther Version 2 - Affordable WiFi hacking platform for testing and learning.
- Wokwi - Online Arduino and ESP32 Simulator.
- Fetch for Arduino - High level HTTP Request Library that gives you a JavaScript fetch like API.
- Arduino 6502 Controller
- Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ (corne-xiao)
- Surfboard - CodeSandbox for Arduino.
- Arduino Library Manager list
- Arduino Cryptography Library
- Sbus - Arduino and CMake library for communicating with SBUS receivers and servos.
- AVR Arduino Zig
- TaskManagerIO - Task, event, scheduling, and interrupt marshalling library for Arduino and mbed boards.
- Running Julia bare-metal on an Arduino (HN)
- STM32LowPower - Arduino Low Power library for STM32.
- Arduino IDE 2.x
- ESP32-targz - Arduino library to unpack/uncompress tar, gz, and tar.gz files on ESP32 and ESP8266.
- Introducing multitasking to Arduino (2022) (HN)
- Riscduino - Arduino compatible Risc-V Based SOC.
- Arduino with Vim & Rust (2022)
- Arduino IDE 2.0 (2022) (HN)
- LiquidCrystal Library for Arduino
- Arduino LED Toggler - Circuit simulator that doesn't look like it was made in 2003. (HN)