distributed worldwide for academic and non-commercial purposes. Isovist Analyst – Written by Sanjay Rana while at UCL. This program creates isovists from building plans as a plug-in to ESRI products. Ajanachara – Open source software developed by Gerald Franz at the Max Planck Institute for Biological Cybernetics. It performs visibility graph analysis of 3D Studio Max and VRML models. Webmap – developed by N. S. Dalton at UCL. Software is free to use (although it requires registration). It allows users to analyse axial maps through a web browser interface. Confeego – Developed by Space Syntax Limited, but available free for academic use. It plugs directly into MapInfo Professional to analyse line axial networks. AJAX – Written by Mike Batty of UCL. It performs both traditional axial network analysis (Batty: primal analysis), and point-based visibility analysis introduced by Bin Jiang (Batty: dual analysis). In a recent paper, Batty showed the mathematical relationship between the two analyses. OverView – plug-in to AutoCad by Christian Derix for Aedas Architects in collaboration with the Center for Evolutionary Computing in Architecture CECA. Allows architects to do quick visual integration mapping via isovist analysis. Can analyse non-planar environments to take volumes and hilly sites into account. AXess – Written by Jennifer Brisbane at the City University of New York. It offers a context menu tool for ArcGIS 9.x that calculates connectivity, control, mean depth, global integration, and local integration for all nodes in an axial line layer. Webmap-At-Home – Written by Nick Sheep Dalton at Open University. It is a Java implementation of the original Axman program with extra features. It is a platform neutral full application capable of reading DXF files and the original Axman binary format. AxialGen – Written by Bin Jiang and Xintao Liu at the University of Gävle, Sweden. It is a plugin to ArcGIS 9.2 that automatically generates axial lines for a complex polygon with holes. Layout-iQ – Used in healthcare, manufacturing, banking, retail, and office space. It evaluates the frequency of flow in a workspace and measures the total minimum travel distance for resources to navigate the workspace. The software integrates CAD drawings with a diagram of flow between points. Urban Network Analysis Toolbox for ArcGIS – A free, open-source package developed by the City Form Lab. It can be used to compute five types of graph centrality measures on spatial networks: Reach; Gravity; Betweenness; Closeness; and Straightness. The tools