Dear all, this could be of interest to people working on structural data analysis and 3D reconstruction. In the last years we have developed a software for structural data analysis including a 3-D "basic" CAD environment. This software (for both Windows and Linux O.S.), the User Manual, a set of example movies, and the entire source code (written in RealBasic2009) are provided as supplementary material of a manuscript describing the main functionalities of the software. The manuscript has been submitted to Solid Earth, an open-access international scientific journal of the EGU, having a two-stage publication process involving the scientific discussion forum Solid Earth Discussions (SED). In the first stage, papers are subject to Interactive Public Discussion, during which comments by members of the scientific community are also published in SED. We would like to invite interested people to download and comment the software and, eventually, to participate to its further public development by implementing/improving the code. Open Plot Project: an open-source toolkit for 3-D structural data analysis by S. Tavani, P. Arbues, M. Snidero, N. Carrera, and J. A. Muņoz http://www.solid-earth-discuss.net/papers_in_open_discussion.html Regards Stefano Tavani