The objectives of this meeting were:(1) to demonstrate, showcase, and benchmark state-of-the-art tools and to facilitate interaction among specialized software developers; (2) to promote a dialogue among the wide range of developers about priorities and guidelines for software design, data and model standards, inter-operability, and open environments, including specific open source standards for spatial data analysis; and (3) to introduce CSISS' open source software development initiative, the "OpenSpace" project. A brief introduction is followed by position papers from meeting participants.