Sakai is an open-source learning management system (LMS) designed to support online and blended learning environments. It provides tools for course management, collaboration, and communication, making it easier for educators and students to interact and share resources. Originally developed by a consortium of universities, Sakai is widely used in higher education institutions around the world. Its features include assignment submissions, grade tracking, discussion forums, and integration with other educational tools, allowing for a flexible and customizable learning experience.