Apps similar to avr8js include Velxio, which is open source with a free version. Other options are Autodesk Tinkercad, Wokwi Arduino Simulator and UnoArduSim. In total there are four Code Editors like avr8js for the web, Windows, Linux, Mac and Android.
Emulate Arduino, ESP32 & Raspberry Pi. in your browser. Write code, compile, and run on 19 real boards — Arduino Uno, ESP32, ESP32-C3, Raspberry Pi Pico, Raspberry Pi 3, and more. No hardware, no cloud, no limits.
Uruguay
Tinkercad is a super easy-to-use, browser based 3D design tool. With Tinkercad you can create 3D printable items: toys to play with, decoration to light up your home or jewelry to express yourself. You dream it, you can make it!
United States
A web-app you can use to simulate circuits as well as run Arduino sketches right in the browser, using the open-source AVR8js platform.
Israel
UnoArduSim provides a virtual target Uno board and allows the user to choose, and interface to, one or more of several types of virtual input/output devices.
