TDA Inc. has been in the business of developing testing and certification software since 1989.

TDA Inc. has been working with educational organizations ranging from school boards to colleges, universities and professional certification boards world wide.  Certification Enterprise also serves as a tool for professional organizations that offer their psychometric and testing services to professional certification boards.
Product Launch Timeline
1989   Exam Manager
1996   Performance Evaluation Technology (PET)
1998   PET Web Server
 2007   Marking Center
 2008   InvigExam
 2008   USB FAD
 2009   Certification Enterprise
© 2011 TDA Inc