Integrated Land and Water Information System (ILWIS) is a remote sensing and GIS software. ILWIS Core is the functional center of the new version.
http://52north.github.io/IlwisCore/ http://ilwis.itc.utwente.nl/wiki/index.php/Main_Page
https://github.com/52North/IlwisObjects/issues
http://ilwis.itc.utwente.nl/wiki/index.php/Getting_started:_Download