AContent vs Torus

AContent is an open source learning content management system for creating accessible, adaptive web-based learning materials. It can be used with learning management systems to develop, share, and archive lessons. Authors can make elearning content, tests or quizzes, activities, and AccessForAll adaptations. The system imports and exports IMS Common Cartridge, IMS Content Packaging, and IMS QTI. Its Web Service API lets third-party software search, preview, import, and export repository content, while an OAuth API supports single sign-on with a connected host system. Listed accessibility standards include WCAG 1.0 and 2.0, ATAG 2.0, US Section 508, and ISO/IEC 24751. Public users can search, browse, and export public repository content; registered users can bookmark lessons; authors create content; administrators manage users and groups. AContent is free and self-hosted, with web access and API support. It is distributed as a 6.5 MB TGZ, and installation requirements are stated to match ATutor's. The downloads page identifies version 1.4 as the latest stable release.

Torus is a free, open-source platform for creating, delivering, and optimizing adaptive learning experiences. It combines course authoring and delivery with rich text, media, and interactive activities. Educators can use, adapt, remix, publish, and version learning components and course derivatives. The Activity Bank stores reusable activities such as quiz questions that can be searched, tagged, and aligned with learning objectives. Branched multiple-choice activities route learners to follow-up questions based on responses. By default, scoring counts all activities on a page, so completing a branch may not produce full credit or a completion checkmark. Torus tracks performance in real time to help educators refine content. It supports LTI 1.3, an extensible activity framework, API access, and managed or self-hosted deployment. The MIT license permits commercial use and industry collaboration. Version 33 added an Instructor Intelligent Dashboard, Adaptive Pages enhancements, template changes, accessibility improvements, and 151 platform updates.