Ben Lewis has participated in the evolution of Geographic Information Systems for 15 years, working in academia, government and private industry. For many years Mr. Lewis has been interested in lowering the barrier to the access of web-based GIS applications and services, and has found open source software provides a compelling platform for broadening access to the technology. Mr. Lewis maintains a master index of Open Source GIS software projects at    (2P08)

Mr. Lewis works for Advanced Technology Solutions, Inc. ( in Lancaster Pennsylvania where he designs and develops systems using open source as well as ESRI approaches. Contact him any time via email blewis<at> or by phone (717)399-7007.    (2P09)