- An Intelligent Facilitator for CPS. Educational Testing Service. Princeton, NJ. 2017 (with project team)
- Tutorials on measurement error for teachers (with project team). Educational Testing Service. Princeton, NJ. 2013-2014
- Conversation-based Assessment Prototypes.Educational Testing Service. Princeton, NJ. 2013-2015 (with project team)
- What’s inside the Box? A Museum Exhibit on Computer-based Testing. Educational Testing Service. Princeton, NJ. 2011 (with project team)
- New score report prototypes for teachers, students and administrators. Educational Testing Service. Princeton, NJ. 2008-2011 (with CBAL Reporting Team)
- A Game of Persuasion/The Request Game: An Assessment-based Gaming Environment for Pragmatic Competence in Request Speech Acts. Educational Testing Service. Princeton, NJ. 2007-2008 (with H. Yang)
- BELLA/English-Math ABLE (EM-ABLE): An Assessment-Based Learning Environment for Middle School English (TII vocabulary) in the context of Math. Educational Testing Service. Princeton, NJ. 2007-2008. (with BELLA/EM-ABLE team)
- English ABLE: An Assessment-Based Learning Environment for English grammar. Educational Testing Service. Princeton, NJ. 2006. (with English ABLE team)
- E-Grammar: A prototype of a learning environment for English grammar using Enhanced Assessment Assets technology (EAA). Educational Testing Service. Princeton, NJ. 2005. (with M. Yang)
- Elicit-ICT: A knowledge elicitation tool for gathering student and evidence model information from experts. Educational Testing Service. 2004.
- FastClassifier: A Bayesian fast classifier for Arpeggio. Educational Testing Service. Princeton, NJ. 2004.
- Arpeggio Interface: A graphical user interface for Arpeggio suite of programs. Educational Testing Service. Princeton, NJ. 2004.
- MSBNx Bayesian exporting module for Portal. Educational Testing Service. 2004.
- The Learning Game: A Learning Environment based on Inspectable/Open Student Models. University of Saskatchewan. Saskatoon, SK. Canada. 2003.
- SModel Server: A distributed Bayesian student modeling server. University of Saskatchewan. Saskatoon, SK. Canada. 2001.
- ViSMod: Interacting with Bayesian student models. University of Saskatchewan. Saskatoon, SK. Canada. 2002.
- JTS: A Multi-Agent Java tutoring system. University of Saskatchewan. Saskatoon, SK. Canada. 2001 (with JTS team)
- VisNet: Visualization of Bayesian networks. University of Saskatchewan. Saskatoon, SK. Canada. 1999.
- ConceptLab: A collaborative tool for building and using concept maps in education and training environments. University of Saskatchewan. Saskatoon, SK. Canada. 2000.
- IHelp: the Intelligent Peer Help Desk. ARIES Lab. University of Saskatchewan. Saskatoon, SK. Canada. 2000 (with IHelp team)
- La PachaMama: Graphical user interface and communication software used by children in Colombian schools. CONEXIONES Project. EAFIT University. Medellín, Ant. Colombia. 1997 (with CONEXIONES Team)
- SUMDI: A scenario-based learning environment for teachers on appropriate selection of educational media. EAFIT University. Medellín, Ant. Colombia. 1994 (with A. Duque)
- The Volcano Scenario: An innovative science task that integrates several game elements. Educational Testing Service. Princeton, NJ. 2012 (with project team).