🎮 Simulation

Ngspice is a mixed-level/mixed-signal circuit simulator.

DipTrace - Professional Schematic Capture and PCB Design Software

The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit. It's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark.

Township is an Impressive, free-to-play, City-Building, Farming, and Multiple platforms video game developed and published by Playrix.

Qucs-S is a spin-off of the Qucs cross-platform circuit simulator.

Open Source

Help building prototypes on so called breadboards easily

The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.

PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics...

AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.

freemium

Delicious: Emily’s New Beginning is an Adventure, Time-Management, Strategy, and Single-player Simulation developed by GameHouse.

Discover the colorful world of My Free Farm 2 and build your own farm on your smartphone or tablet!

karaoke 5 software - Excellent Player and Creator of file Karaoke. Karaoke.  Professional karaoke program. Free karaoke program.

American Truck Simulator combines the elements of Driving, Open World, Realistic Environment, and Economy Simulation released by SCS Software.