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https://learningequality.org/

Kolibri is an adaptable set of open solutions specially developed to support learning for the half of the world without Internet access. Centered around an offline-first learning platform that runs on a variety of low-cost and legacy devices, the Kolibri Product Ecosystem includes a curricular tool, a library of open educational resources, and a toolkit of resources to support training and implementation in formal, informal, and non-formal learning environments.

Kolibri is being used in over 200 countries and territories around the world, and serving millions of learners and educators living in underserved contexts where the internet is costly, unreliable, or simply beyond reach.