Flight Tracking apps

AvioADSB

Free real-time ADS-B API built on a community network of receivers. Call it with no key, or connect your own RTL-SDR receiver for a free Contributor key with 10,000 requests a month. Same paths and JSON shape as adsb.lol and readsb, so existing clients work after a base-URL change. Find aircraft near a point, look up by ICAO hex, callsign, registration, type or squawk, filter military aircraft, and pull global snapshots.