e4 on JavaFX
e4 or better the Eclipse 4 Application Platform is not bound to SWT but can be used with any rendering technology. Learn more about the JavaFX-rendering (Efxclipse/Runtime/e4).
There are set of best practices collected at Efxclipse/Runtime/Recipes
SWT on JavaFX
SWT on JavaFX is a experimental port of the SWT-API on top of JavaFX Efxclipse/SWTonFX
In case you are interested in providing bugfixes, contributing new features. Follow to this our Efxclipse/Development.