Idiogrid is a computer program for analyzing repertory grids in both research and applied settings. With this software, which runs under the Windows operating system, grids of virtually any size can be managed and analyzed. Grids can be transformed, manipulated, merged, and subjected to a host of statistical analyses. Descriptive statistics, principal components analysis, grid comparison techniques, and coordinate grid analysis are all available in the software. A number of indices commonly applied to repertory grids are also computed by Idiogrid, such as measures of ordination, cognitive complexity, and intensity. Text output as well as high-resolution graphics are produced by the software, and grids themselves can be exported to other statistical programs for further analysis.