Open education website, OER textbooks, free course materials, ADAPT homework, LibreVerse, faculty collaboration, STEM and humanities libraries

LibreTexts

LibreTexts is an open education website with free OER textbooks, course libraries, ADAPT homework, faculty collaboration tools, and learning materials across many subjects.

Official site

libretexts.org is the main public website for LibreTexts and links to its subject libraries, Commons, ADAPT, Studio, and related tools.

Core use

Students and faculty use LibreTexts to access free open educational resources, textbooks, homework, and course materials.

Subject range

LibreTexts includes libraries for biology, chemistry, engineering, humanities, mathematics, physics, social sciences, statistics, workforce, and other areas.

LibreTexts is an open education platform with free OER textbooks, subject libraries, homework tools, and faculty collaboration resources.View logo on LibreTexts

What LibreTexts is

LibreTexts is an open education website for free OER textbooks, course materials, subject libraries, homework tools, and faculty collaboration. It connects learners and educators to open content across STEM, humanities, social sciences, workforce education, K-12 materials, and related teaching resources.

Subject libraries

LibreTexts is organized around subject libraries such as biology, business, chemistry, engineering, geosciences, humanities, mathematics, physics, social sciences, statistics, and workforce education. That library structure helps students and instructors start from a course area rather than a single textbook title.

Open educational resources

LibreTexts is part of the open educational resources movement. OER materials are designed to be freely accessible and, depending on the license, reusable or adaptable. For instructors, this can make it easier to customize readings; for students, it can reduce the cost of required course materials.

ADAPT homework

LibreTexts also connects to ADAPT, its homework and assessment platform. That makes the ecosystem broader than a textbook library: instructors may use readings, practice, assessments, and course materials together rather than treating the textbook as a separate static file.

Faculty collaboration

Open education work often depends on faculty editing, remixing, reviewing, and sharing materials. LibreTexts supports that through tools and spaces such as Commons, Studio, Conductor, and its wider LibreVerse ecosystem, giving educators ways to build and maintain course resources collaboratively.

Cost and access

A major purpose of LibreTexts is reducing the financial burden of textbooks and course materials. Free online access can make a difference for students who might otherwise delay buying materials, share a book, or go without readings during the first weeks of class.

Why it matters

Course materials shape what students can study and when they can start. LibreTexts matters because it combines open textbooks, modular course content, and teaching tools in a way that can lower costs while giving educators more flexibility over what they assign.

Limits and tradeoffs

Open materials still require careful review. Instructors need to check accuracy, coverage, accessibility, licensing, update history, homework fit, and local learning goals. Free access is powerful, but a course still needs thoughtful design and support around the materials.

WHOIS domain data

Data pulled: June 1, 2026View current WHOIS record

Domain: libretexts.org
IP address: 172.66.163.119
Registrar: Squarespace Domains II LLC
WHOIS server: whois.squarespace.domains
Referral URL: https://domains.squarespace.com
Created: July 22, 2016
Updated: July 17, 2025
Expires: July 22, 2026
Nameservers: celine.ns.cloudflare.com (162.159.38.98); ridge.ns.cloudflare.com (108.162.195.139)
Domain status: clientDeleteProhibited; clientTransferProhibited
DNSSEC: signedDelegation
Contact privacy: Registrant contact details are redacted; organization is listed as LibreTexts Inc.

Key concepts

OERopen educational resources, including free and openly licensed textbooks, readings, activities, and teaching materials.
LibreTexts librarya subject-specific collection of open course materials and textbook content.
ADAPTLibreTexts' homework and assessment platform.
Remixingadapting or combining open materials for a specific course or teaching need.

Common workflows

Students read assigned LibreTexts pages or chapters through a subject library.
Instructors search for open materials that match a course topic, then adapt or link them.
Faculty build course resources using LibreTexts tools and share materials through connected spaces.
Teachers combine open readings with homework, assessment, discussion, and local course activities.

Common misconceptions

LibreTexts is not only a textbook archive; it also includes homework, collaboration tools, and multiple subject libraries.
Open access does not remove the need to verify quality, fit, and accessibility.
Free course materials can still require instructor time to organize and adapt.
OER licenses vary, so reuse and remixing rights should be checked for specific materials.

Open questions

How should instructors decide whether to adopt, adapt, or remix an open textbook?
What review processes help keep open materials current and accurate?
How can colleges support faculty time for building open course resources?
Which digital tools best complement open textbooks without reintroducing high student costs?