World of Airports - World of Airports is a Management, Strategy, Simulation, and Single-player video game developed by Haugland.
FlightGear - 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.
AirlineSim - AirlineSim is an online airline simulation game for professional players, making them run their own virtual airlines with its sophisticated planning, reservation, inventory, and management system.
GeoFS - Free, Web based flight simulator with worldwide satellite images.
Airlines Manager – Tycoon 2021 - Airlines Manager – Tycoon 2021 is an Adventure, Strategy, Business Simulation, Management, and Single-player video game by Playroom.
X-Plane - The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.