SimulIDE could (should?) be updated but seems unmaintained

Just a notice.

SimulIDE version 1.0.0 2023 
Debion simulide version 0.1.7 2018
https://tracker.debian.org/pkg/simulide

https://www.simulide.com/p/home.html
https://launchpad.net/simulide
Old:
https://sourceforge.net/projects/simulide/

SimulIDE is a simple real time electronic circuit simulator, intended
for hobbyist or students to learn and experiment with simple electronic
circuits and microcontrollers, supporting PIC, AVR and Arduino.

This is not an accurate simulator for circuit analysis, it aims to be
fast, simple and easy to use, this means simple and not very accurate
electronic models and limited features.