His primary area of research is in the design, development, usage and theorization of tools for the digital humanities, especially for text analysis and visualization. He has led or contributed significantly to projects such as Voyant Tools, the Text Analysis Portal for Research (TAPoR), the MONK Project, the Simulated Environment for Theatre, the Mandala Browser, and BonPatron. In additional to his work developing sophisticated scholarly tools, he has numerous publications related to research and teaching in the Digital Humanities, including Visual Interface Design for Digital Cultural Heritage, co-authored with Stan Ruecker and Milena Radzikowska (Ashgate 2011).