LibreTexts vs TESSA OER

LibreTexts is a nonprofit open education platform for creating, adapting, and sharing accessible textbooks, homework, and related learning materials. Its libraries cover 17 subject fields and more than 2,000 textbooks, and instructors can remix chapters into custom books. Pages can include Jupyter Notebooks, ADAPT homework questions, 3D visualizations, and videos. ADAPT supports formative and summative assessment and includes a shared bank of more than 240,000 openly licensed elements. LibreTexts can be embedded in institutional learning management systems over a secure connection, with optional grade and assessment exchange. Guides cover importing books into Canvas, Moodle, and D2L, and also mention Blackboard. Book pages may provide PDF, EPUB, and editable downloads. Educators can create, adapt, and host open educational resources free of charge. The service is available on the web, Android, and iOS, with offline access and annotation tools. A free plan is listed, with paid pricing from $15/mo.

TESSA OER is a free education research and development project founded in 2005 that works with partners to support primary and secondary teachers across sub-Saharan Africa. Its open educational resources are linked to national curricula and offered in multiple language and country versions. The collection contains 90 subject-based modules: 75 structured primary units and 15 secondary units. Modules provide practical activities, case examples, classroom materials, and guidance on teaching strategies for engaging learners. Handbooks and toolkits support teachers and teacher educators, while the materials cover professional learning from initial teacher education through continuing development. A shared space lets teachers and teacher educators exchange adaptations. Published under an open Creative Commons licence, the resources are free to use, adapt, and share. Materials are available online and offline in digital and printed formats. Teachers may use them independently or integrate them into pre-service and in-service training programmes.