Welcome to OpenJFX. JavaFX is the next generation widget toolkit for the Java client. It is modern, efficient and full featured. OpenJFX is the open source version of the toolkit. OpenJFX is presently a subset of JavaFX, but over time, as more of JavaFX becomes open source, they will become the same.
The JavaFX toolkit evolved from the F3 project at Sun. Initial releases were based around the JavaFX scripting language, however, in 2011 the toolkit was completely rewritten in Java and released by Oracle as JavaFX 2.0. In October 2011 Oracle announced that it would donate the JavaFX toolkit to the open source community and by November 2011 the OpenJDK Community had agreed to take it on.
The Project is currently focused on absorbing the existing code base from Oracle and building a functioning community around it. Oracle's code will be donated in phases with the initial piece being the UI Controls classes. Further sub-systems are expected in the coming months.