Digital Circuits Design and Simulation
VHDL 2008/93/87 simulator
PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
General Mission Analysis Tool
Component, CA, and CCA models; superdense time, ETL DB, testing, etc.
Object-oriented equation-based modelling and optimisation software
A free, open-source electronics calculator suite for Linux
Particle-in-cell code for plasma simulation
A Dassault Aviation project to simplify the building of prototypes
Frevo is probably the simplest tool for evolutionary design
3D open source actuator simulation software
2D open source actuator simulation software
Growth-grammar related Interactive Modelling Platform
AVR simulator IDE
Dedicated to computer-aided engineering Linux distribution
GeckoCIRCUITS is THE circuit simulator for modeling power electronics
A framework for simulating open quantum dynamics
PPface is vector processor emulator / simulator
Toolkit for agent-based & dynamic microsimulation modelling
A simple Python framework for loosely-coupled multiphysics simulations
Open Knowledge on engineering development.
Analyze molecular simulation data
An open source toolkit for real space missions