For those interested in small / medium hobby projects:
FXGL (FX Gaming Library) is a JavaFX 8 game development framework, primarily targeted at 2D games.
Source code, javadoc, tutorials and the full list of features can be found on GitHub: https://github.com/AlmasB/FXGL.
Some example projects can be found on the main website: http://almasb.github.io/FXGLGames/.
FXGL wiki: https://github.com/AlmasB/FXGL/wiki
Gitter chat at: https://gitter.im/AlmasB/FXGL
Some screenshots from various demos: