Loaded page "OpenStax | Free Textbooks Online with No Catch"
skip to main content

Free. For all!

OpenStax is the world’s largest publisher of open education resources (OER) and a provider of interactive learning technologies and education research for high school and college. We are a nonprofit initiative of Rice University.

Photograph of a student sitting on grass, smiling and looking at ipad

25 years of making a difference

Since the publication of our first textbook in 2012, we have saved 36.1 million students $2.9 billion across 150 countries.

See our impact

More than free online textbooks

A library of 70+ free resources with aligned instructional materials and interactive learning technologies for your course.

Find your subject

Teach freely, learn equitably

Knowledge is a public good, not a privilege. OpenStax values inclusivity, representation, and the democratization of knowledge.

Read our DEI commitment

Educating the world requires partnership

OpenStax partners with EdTech organizations to deliver low-cost, high-value instructional tools aligned with our content.

Search courseware

Higher Education

We publish high-quality, peer-reviewed, openly licensed college textbooks that are free online and low-cost in print.

Find your subject

K12 Education

Explore our openly licensed library of resources and free instructional materials for high school teachers.

Explore K12 Free Resources

Learning Research

Get personalized learning insights and earn recognition badges. OpenStax Kinetic is a platform to help understand learning.

Try OpenStax Kinetic

What's new at OpenStax

Imagine... no limits to learning!

OpenStax is looking to the future with excitement and purpose. Our team is creating tools and technologies that can help every learner achieve their dreams. We imagine a world where education is engaging and amazing for all!

Watch the video

OpenStax celebrates 25 years of serving students!

What started as an idea in 1999 has led to OpenStax saving $2.9 billion! Today, we are still committed to making an amazing education accessible for all through interactive learning technologies and high-quality content!

Read the press release

OpenStax Algebra 1 approved by Texas SBOE!

Developed in collaboration with more than 250 Texas teachers, this engaging, research-based curriculum has officially been added to the Texas Instructional Materials Allotment list!

Read the press release

Double your impact with OpenStax!

Steve Mollenkamp and Harumi Ikezaki have generously pledged a $25k matching gift. Every dollar you give now through December will be doubled, helping more learners in your community access high-quality, free education. Make your gift today!

Give now

Interested in using OpenStax?

We’ll show you how to take advantage of all that OpenStax has to offer.