PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
Real Time Electronic Circuit Simulator.
Simulate your IO with this Arduino Simulator
ESP8266/ESP32Arduino custom modem<->internet firmware
AVR simulator IDE
Open-source RTOS and Embedded Systems Toolkit for C++ and C
RetroPC-SIM is an Arduino project to help to understand how pc works
Linux for Arduino and Makers developers
Supports NxT, Asuro, Arduino-Bot and many more. With simulator.
SDK for connecting to AWS IoT from an Arduino Yún
To be a practical Arduino simulator
Hardware and software for self-driving vehicles
ESP32 Online simulator for windows, Mac and Linux - Free from Wokwi