LEGO CAD online editor
2012-04-28, 17:10 (This post was last modified: 2014-05-11, 11:25 by Michael Heidemann.)
2012-04-28, 17:10 (This post was last modified: 2014-05-11, 11:25 by Michael Heidemann.)
Not LDraw based (yet), but pretty interesting: http://www.mecabricks.com/en/workshop/
See also discussion on Eurobricks
See also discussion on Eurobricks