• HiGraf: Interactive Tools for the Graphic Specification of Context-Sensitive User Interfaces
    		• (1996)
  • Workflow Management
    		• (1995)
  • OOPI: Object-Oriented Program Interface
    		• (1995)
  • Multius: Tools for the development of multimedia applications
    		• (1995)
  • KIISS: High-Level Tools for User Interface Development
    		• (1993)
  • PROGENES: Automated Mathematical Problem Solving
    		• (1991)