The Graphical Editing Framework (GEF) provides technology to create rich graphical editors and views for the Eclipse Workbench UI. It bundles three components:

* Draw2d (org.eclipse.draw2d) - A layout and rendering toolkit for displaying
graphics on an SWT Canvas.
* GEF (MVC) (org.eclipse.gef) - An interactive model-view-controler (MVC)
framework, which fosters the implementation of SWT-based tree and
Draw2d-based graphical editors for the Eclipse Workbench UI.
* Zest (org.eclipse.zest) - A visualization toolkit based on Draw2d, which
enables implementation of graphical views for the Eclipse Workbench UI.