Originally, deeJUMP used to be a deegree development based on a branch from the software JUMP. Development on deeJUMP as a stand alone software is not being continued. Instead, the functionality can now be found in OpenJUMP via two plugins.
Recently, the deeJUMP functionality has been made available for OpenJUMP through two different plugins. Please refer to WFSPlugin and deeJUMPPlugin, if you want to add deeJUMP functionality to OpenJUMP. Note that the deeJUMPPlugin depends on the WFSPlugin.