PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
Includes tools for performing electronic calculations.
IEC 104 RTU Server Client Simulator Source Code Library Win Linux
Real Time Electronic Circuit Simulator.
Integrated Development Environment (IDE) for learning HDL
Digital circuit simulator
Cadence 614 installing scripts with source files
A graphical Finite State Machine (FSM) designer.
Electric power system transient simulator
Unified Verification Environment