H2O, Adaptable Digital Textbook Project is a project from the Harvard Initiative for Learning and Teaching (HILT) with support from the Harvard Library Lab.
From the H2O Web Site
H2O is a suite of online classroom tools developed and provided by the Berkman Center for Internet & Society in collaboration with the Harvard Law School Library. H2O allows professors to freely develop, remix, and share online textbooks under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License (per the Terms of Service). H2O is based on the open-source model: instead of locking down materials in formalized textbooks, we believe that course books can be free (as in “free speech”) for everyone to access and, just as important, build upon. Currently, H2O is geared primarily toward law professors, though the platform can be used across intellectual domains.
Here’s a new video (April 22, 2013) featuring Professor Jonathan Zittrain*, Harvard Law School and a member of the project team discussing H2O.
Learn More About H2O: Project Report via Harvard Library Lab
Direct to H2O Web Site
* Zittrain is also Vice Dean, Library and Information Resources, Harvard Law School and Faculty Co-Director, of the Berkman Center for Internet and Society