If you are looking for the latest stable release, please go to the download page.
This is a work in progress and from time to time a new snapshot will be available, it might be old, it might be unstable, but probably just interesting.
This snapshot requires Java 11 with JavaFX. The ones from Azul Systems and Bellsoft are recommended.
A stand alone snapshot (with a bundled Java Runtime Environment) is also available as Mapton-x86_64.AppImage.