User-Centered Website Development
A Human-Computer Interaction Approach












By Dan McCracken and Rosalee Wolfe

Online resources for students and faculty

Tools for Card Sorting

  • IBM's EZSort was the first program created specifically for computing the cluster analyses from card sorting. It pioneered the use of a dendrogram to display the results of the cluster analysis. A beta release is available for download.
  • The National Institute of Standards and Technology (NIST) created WebCAT to test either proposed or existing categorization schemes to determine how well the categories are understood by users.
  • Information and Design, a company in Australia, created Classified as a tool for evaluating existing categorization structures.
  • By far the best card sorting program in existance is Jorge Toro's CardZort. It capitalizes on the metaphor of playing cards on a tabletop to offer a natural interface as well as providing the most powerful analysis tools currently available.


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