Ivao
INTERNATIONAL VIRTUAL AVIATION ORGANISATION
- www.ivao.aero
- www.ivao.it
- webeye.ivao.aero
- quickoverview.ivao.it
- Scuola di volo IIAS
- Scuola di volo IIAS documentazione
utilities
- https://skyvector.com/
- www.onlineflightplanner.org
- https://skyvector.com
- www.enav.it – List of aerodromes
- www.validation.eurofpl.eu
- www.flightutilities.com
- RouteFinder
- simroutes.com
- Plan-G