I did research on that topic when implementing my project https://adsb.exposed/ https://adsb.exposed/ The list of all data exchanges is here: https://github.co

I did research on that topic when implementing my project https://adsb.exposed/ https://adsb.exposed/ The list of all data exchanges is here: https://github.com/ClickHouse/adsb.exposed/?tab=readme-ov-file#list-of-exchanges https://github.com/ClickHouse/adsb.exposed/?tab=readme-ov-fi... One of the best is https://airplanes.live/ https://airplanes.live/ - which currently aggregates data from nearly 1700 feeders globally; they have a legal agreement preventing sale of this data (to avoid situations like with adsbexchange); they share the data on a selective basis. One of the largest ones, Opensky Network - is supposed to be open for research purposes but they refused my request straight ahead. https://adsb.lol/ https://adsb.lol/ - is controversial. This database is made available under the Open Database License: http://opendatacommons.org/licenses/odbl/1.0/ http://opendatacommons.org/licenses/odbl/1.0/ plus under CC0, but there is some drama that I don't understand: https://github.com/ClickHouse/adsb.exposed/issues/12#issuecomment-2054112237 https://github.com/ClickHouse/adsb.exposed/issues/12#issueco...