Hangar Addons is a community-driven platform for flight simulation enthusiasts, bringing together free add-ons, flight plans, tools, and discussion for Microsoft Flight Simulator 2024, Microsoft Flight Simulator 2020, and X-Plane 12. Its library includes aircraft, liveries, airports, scenery, utilities, panels, and instruments, with browsing options such as simulator-specific collections, aircraft categories, scenery maps, and location-based listings. Members can also explore routes and departure guides, use a flight planner, visit forums, and connect through virtual airline and community resources.

For Windows 10 and 11, Hangar Addons offers a desktop manager that can install and update add-ons directly, show release notes, manage required dependencies, and roll back problematic updates. The site also features a browser-based Livery Studio beta for designing, previewing, exporting, or publishing custom repaints for supported MSFS 2024 aircraft. Creators can upload and share their work, while users can discover new releases, follow popular downloads, and learn from help guides and news. Hangar Addons states that it is not affiliated with Microsoft, Asobo Studio, or Laminar Research.