InternetNews.com reports that Microsoft gained <A HREF="http://www.internetnews.com/ent-news/article.php/2233471">another open source competitor</A> in OpenGroupware.org, an open source project developing groupware server software which competes with Microsoft's Exchange Server. OpenGroupware.org (OGo) provides server components for full office collaboration with the OpenOffice.org suite as well as other Linux and Windows groupware projects. The OGo software runs on Linux and Solaris.