Hello there! This is nlin from 3Di. Regarding Nebadon's comment about Idealist Viewer: that's right, 3Di OpenViewer uses some code from Idealist Viewer. The EULA that appears when you install the binary plugin states this, although it is written in Japanese :-)
Idealist viewer
Tue, 09/01/2009 - 13:51 — nlin (not verified)