TAO

TAO is the leading Open Source, QTI-compliant e-testing platform: a modular, end-to-end system for building, delivering, and managing digital assessments.

TAO (Testing Assisté par Ordinateur) is a commercial-grade, open-source assessment platform developed by Open Assessment Technologies (OAT). It provides a full-cycle solution: authoring, delivery, and reporting. The platform enforces open standards, specifically Question and Test Interoperability (QTI) and Learning Tools Interoperability (LTI), ensuring content portability and audit-proof transparency. Modular components like TAO Advance (the next-gen delivery engine) and TAO Grader (technology-assisted human scoring) handle diverse needs. This system scales: it has been deployed to over a million students in more than 70 countries for everything from classroom quizzes to large-scale, high-stakes programs.

https://www.taotesting.com