OSIS (Object Systematics Information System) is an attempt to provide the basic classes and tools for systematics software under the GNU General Public License. It consists of an high-level objet-oriented data model, implemented in java and XML, and a visual editing environment. For more information, see http://lis.snv.jussieu.fr/~rousse/recherche/osis Comments welcomed. -- Guillaume Rousse rousse@ccr.jussieu.fr GPG key http://bohm.snv.jussieu.fr/~rousse/gpgkey.html