CATEST is a project-based Item Response Theory(IRT) Distributed Testing system. Development platform. Net 2.0 + MSSQL
Celiz is a open source Judge System. Judge System is a software for doing judge work in Olympiad Informatics match, and also being used in ACM-ICPC International Collegiate Programming Contest.
A text-UI testing & scoring system on Linux for Olympiad in Informatics programs. Basic ranking and time-cutting are supported.