NextATC

Realistic ATC and traffic
simulation for X-Plane 11 and 12.

A full ATC and traffic simulation built on real-world procedures. Free, offline, and engineered with attention to realism.

Linux · macOS · Windows · X-Plane 11 & 12

Screenshots

A look inside.

NextATC screenshot 0NextATC screenshot 1NextATC screenshot 2NextATC screenshot 3NextATC screenshot 4NextATC screenshot 5NextATC screenshot 6
About

A new plugin. The same promise.

After 10 years of experience coding 124thATC, I decided to dedicate myself to a completely new project, rewritten from scratch. NextATC starts from a new codebase and carries forward the knowledge, fixes, and improvements accumulated during 124thATC development.

124thATC has been discontinued and new public builds are distributed as NextATC. My work now goes into this new plugin, refined and pushed forward for X-Plane 11 and 12.

NextATC will stay free, and development will continue actively. Patreon supporters will help shape the features and characteristics of future versions of the plugin.

From now on, my efforts will focus entirely on this new plugin. With regret, that also means I will have to step away from the development of 124thATC.

NextATC is, and will always be, free.

If you'd like to contribute to the project, you can support NextATC on Patreon (recurring) or send a one-time donation. Patrons get new features early through the Patreon Alpha, and a paid membership unlocks dedicated technical support.

Download

Get NextATC.

NextATC is under continuous development and follows a rolling release model. It has not yet reached a fully stable version, so please keep this in mind when using it.

NextATC is free for everyone. Both the public release and the Patreon Alpha receive continuous updates.

The public version can be downloaded below and is also updated automatically through NextATC's built-in updater, which checks for new releases and offers to install them.

The Patreon Alpha is distributed exclusively through the built-in updater and is available to Patreon supporters with an active subscription.

New features are introduced first in the Alpha channel, allowing early access and testing. Bug fixes are delivered to both the Alpha and public Beta or Stable releases as appropriate.

Public Beta: 1.1.0-beta+build.3902 2026-11-04 18:46 UTC
Patreon Alpha: 1.2.0-alpha+build.4044 2026-11-04 19:01 UTC

Alpha builds are available only through NextATC's built-in updater, and only for Patreon supporters.