To get the JavaFX Script runtime, library source, and demo source code files, you have two options:  

» Check out the source code using a Subversion client.
» Download the libraries, demos, and docs in a tar.gx or zip file.

The JavaFX Script Plugin for the NetBeans IDE offers JavaFX Script language support for the NetBeans IDE.  

»  Download the plugin.

The OpenJFX Compiler project is focused on creating a JavaFX compiler to translate JavaFX scripts into JVM class files (bytecode).  

» Check out the OpenJFX-Compiler source code using a Subversion client.