Led by the University of Michigan Press, this organization publishes works in new media studies and digital humanities that can be read online without charge.
Partnering with over 120 research institutions and libraries, Hathi Trust provides a robust library of public domain (and legally available copyrighted) texts
Attempting to electronically catalog every book ever published, Open Library works as a catalog to over 20 million records with nearly 2 million scanned versions of books.
While not every book in the UC Press collection is freely accessible, over 700 of their published texts are available electronically for academic needs.