MOOCs
Coursera:
Coursera is an education company that partners with the top universities and organizations in the world to offer for free courses online for anyone. This technology enables the partners to teach millions of students rather than hundreds: http://www.coursera.org
Khan Academy:
Khan Academy is a not-for-profit organization by providing a free of charge world-class education, by video lectures, for anyone anywhere. Resources are available to anyone whether student, teacher, home-schooler, principal or an adult returning to the classroom after 20 years: http://www.khanacademy.org/
Udacity:
Its mission is to bring accessible, affordable, engaging, and highly effective higher education to the world. Higher education is a basic human right, and it seeks to empower the students to advance their education and careers: https://www.udacity.com/
Hathi Trust's Digital Library:
It is a very resourceful database of millions of books on a variety of subjects for the researchers: http://www.hathitrust.org/
IDEAL:
Illinois Digital Environment for Access to Learning and Scholarship (IDEAL) is the digital repository for research and scholarship - including published and unpublished papers, datasets, video and audio - produced at the University of Illinois: http://ideals.illinois.edu/