PlanePlotter is described as 'receives and decodes live digital position reports from aircraft and plots them on a chart. You can see a radar-like display of all those aircraft around you broadcasting digital messages including ACARS, ADS-B and HFDL' and is a GPS Navigation Service in the Travel & Location category. There are nine alternatives to PlanePlotter for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and iPad. The best alternative is FlightRadar24, which is free. Other great apps like PlanePlotter are RadarBox (Freemium), ADSBExchange (Free), adsbScope (Free Personal) and FlightAware (Free).
The world’s largest co-op of ADS-B/Mode S/MLAT feeders, and the world’s largest public source of unfiltered flight data. Access to worldwide flight tracking data for hobbyists, researchers, and journalists alike.
The adsbSCOPE software is another free ADS-B radar program with network sharing options. You can download ADS-B data which is shared by other adsbSCOPE users to augment your own local radar setup. This allows you to have a global air radar.
Virtual Radar Server is an open-source application that can connect with aircraft ADS-B exchanges as well as locally run tracking systems. It runs a local web server where aircraft can be viewed on a map.
The OpenSky Network is a non-profit ADS-B exchange for sharing real time aircraft data broadcast over the airwaves. The network consists of thousands of sensors connected to the Internet by volunteers which collect ADS-B and Mode S broadcast data.
Open source project displaying aircrafts, ships or trackers on 2D/3D map. Browse through the data based on a particular aircraft, airline, airport or vessel to search through the database or see extensive statistics. Can use many data sources.