Free air traffic control simulator for Windows. Work Frankfurt on real German airspace, speak real ICAO phraseology, and the pilots read back. https://next.echodelta.app/ https://next.echodelta.app/changelog/2026-10-01-v0-2-0/ https://next.echodelta.app/changelog/2026-10-01-v0-2-0/ Tue, 20 Oct 2026 00:00:00 GMT Approach Departure Voice Free Pla https://next.echodelta.app/changelog/2026-09-15-v0-1-0/ https://next.echodelta.app/changelog/2026-09-15-v0-1-0/ The first playable build. Work Delivery, Ground and Tower at Frankfurt, by voice. Thu, 15 Oct 2026 00:00:00 GMT Delivery Ground Tower Voice Free Play