New! H2O now has access to new and up-to-date cases via CourtListener and the Caselaw Access Project. Click here for more info.

Main Content

Build a better casebook.

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

View featured books

Simple to use

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

Free

Students spend thousands of dollars on textbooks during law school. Free casebooks make education more accessible and equitable.

Open Access

All materials in H2O are Creative Commons licensed for sharing and re-use, making it easy for professors to build off of each others’ work.

Library-Powered

H2O is made by the Harvard Law School Library and designed carefully to serve faculty and student needs while supporting access for all.

Help Guide
a screenshot of an example case

Featured Faculty Authors

Headshot of Jonathan Zittrain
Professor Jonathan Zittrain
Harvard Law School
Torts
Headshot of Jeannie Suk Gersen
Professor Jeannie Suk Gersen
Harvard Law School
Criminal Law
Headshot of Brian Quinn
Professor Brian Quinn
Boston College Law School
An Introduction to the Law of Corporations
Headshot of Charles Fried
Professor Charles Fried
Harvard Law School
Contracts Law
Headshot of Glenn Cohen
Professor I. Glenn Cohen
Harvard Law School
Civil Procedure
Headshot of Naz Modirzadeh
Professor Naz Modirzadeh
Harvard Law School
International Humanitarian Law / Laws of War
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