NB Currently we are converting the Zong! project from Java to Kotlin. We will get rid of the Lombok and GWT workarounds and will have a more modern language that targets both the Desktop (JVM) and the Web (JavaScript).
Zong! is an open-source music notation software, which is currently under development. It will be available on a number of devices and systems, including Windows, Mac OS X, Linux, Android and the Web (HTML5 + JS).
To build the project, call gradlew in the root folder. To build the Android part, call gradlew in the mobile folder.
Have a look at our website, the development wiki and our tracker. You can find videos there, which explain in more detail how to download and build the project.
The current progress of our MusicXML support and of our layout engine is shown by our status reports and visual reports based on the Unofficial MusicXML Test Suite.
Contact andi@xenoage.com for questions.