OverlayFly is a flight simulation software platform for Microsoft Flight Simulator (MSFS 2020 & 2024). Products include Flight One Pro (overlay, planning, AI assistant), Taxi Navigation System (taxi routing and speed protection), and Real Turbulence System (physics-based turbulence). Features ATC speech-to-text, IVAO/VATSIM-friendly workflows, in-flight monitoring, and addon management.