Main Content

Build a better casebook.

H2O helps law faculty create high quality, open-licensed digital textbooks for free.

View a book

Fast, Simple and Free

Collect materials, hide and annotate text, and distribute casebooks to your students quickly and reliably. H2O is easy to add to your class.

Open Access

All materials in H2O are licensed CC BY-NC-SA and free to copy, reuse and remix.


H2O is made by the Harvard Law School Library and designed carefully to serve faculty and student needs.

a screenshot of an example case

Featured Faculty Authors

Professor Jonathan Zittrain
Harvard Law School
Professor Jeannie Suk Gersen
Harvard Law School
Professor Brian Quinn
Boston College Law School
Professor Charles Fried
Harvard Law School
Professor I. Glenn Cohen
Harvard Law School
Professor Naz Modirzadeh
Harvard Law School
H2O's open source platform has transformed the way I teach corporate law.
Professor Brian Quinn, Boston College Law School

"Build coursebooks better, faster and smarter — today."

Get started