A tool for all aviation enthusiasts, NavSim is a free, open-source, user-configurable Flight Simulator add-on that assists the virtual pilot in all aspects of flying, from pre-flight preparation and planning, to executing and monitoring the flight, to post-flight analysis.

Intended as an “all-in-one” virtual aviation tool, NavSim is a standalone Windows/PC application that runs on your local machine, but not necessarily on the same PC that hosts the Flight Simulator. As such, NavSim could be a valuable tool for flight-schools and instructors.

NavSim’s primary display is a visual, interactive moving map of the world, in which all relevant data is plotted. You can connect to a running instance of a Microsoft Flight Simulator X via SimConnect to obtain real-time information about the flight in progress. You can also monitor FSD-based online ATC networks, such as VATSIM or IVAO, and show their online members including pilots, ATC controllers, and observers, both on the map, and in various lists.