ATutor

ATutor is an open-source web-based Learning Management System (LMS) developed at the University of Toronto's Adaptive Technology Resource Centre (ATRC, now the Inclusive Design Research Centre) with accessibility as a founding design principle. Created in the early 2000s to address the widespread inaccessibility of existing LMS platforms, ATutor was one of the first learning management systems built from the ground up to be usable by people with disabilities, including screen reader users, keyboard-only users, and users with cognitive disabilities. ATutor achieved notable firsts in accessible e-learning, including the first implementation of the IMS AccessForAll specifications and ISO 24751 standards for personalized content adaptation. The platform supports IMS Content Packaging for interoperable course content exchange. ATutor was developed by the same team that created AChecker and other influential open-source accessibility tools, under the leadership of Greg Gay at the ATRC.