Sandbox video game with a powerful physics engine
PyAMS (Python for Analog and Mixed Signals) CAD approach
PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
VHDL Verification and Simulation Tool
DSpice: Design and Simulation of Circuits using Spice
A circuit simulator with graphical user interface (GUI)
Digital Circuits Design and Simulation
Solves symbolic electrical AC circuit equations
IEC 104 RTU Server Client Simulator Source Code Library Win Linux
A Cross Platform and Open Source Electronics Design Automation Suite
Real Time Electronic Circuit Simulator.
Integrated Development Environment (IDE) for learning HDL
Analog \ digital circuit design and simulation source code
Digital circuit simulator
AVR simulator IDE
Simple and intuitive 2D vector drawing for electronics and not only.
Optimer: a SPICE base electrical/ electronic circuit optimization tool
Penthode simulates, draw and plot electrical power distributions
The Future of the Java Circuit Simulator