MobileSpaces system, including source codes, can be downloaded from the following URL.

http://research.nii.ac.jp/~ichiro/mobilespaces/download/mobilespaces020120.zip

This file is compressed in a zip-format. This system needs JDK 1.2 or later versions. It is available on Micrsoft Windows95/98/Me/NT/2000/XP, Mac OS X (10.1), and Linux.