JEM is freely usable, licensed under the GNU General Public License version 3 (GPLv3).
JEM licenses dependency
This is the list of libraries used by JEM core modules and their licenses (to check GPL compatibility):
JEM Eclipse plugin licence dependency
Due to JEM provides a Eclipse plugin and usually plugins are not compatible with GPL license, JEM Eclipse plugin is licensed under Eclipse Public License v1.0.
This is the list of libraries used by JEM Eclipse plugin and their licenses (to check EPL compatibility):
|Apache Commons IO||Apache License version 2.0|
|Apache Commons Logging||Apache License version 2.0|
|Apache HTTP component||Apache License version 2.0|
|Apache Log4J||Apache License version 2.0|
|Oracle Jersey||GNU General Public License version 2 (GPLv2)||Common Development and Distribution License (CDDL - Version 1.1)|
Pay attention that in JEM Eclispe Plugin, Oracle Jersey is used under Common Development and Distribution License, to be compatible with EPL.