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Free learning resources

Open university catalogs, edX school pages, course libraries, open textbooks, browser-based labs, note-taking guides, and free GED prep.

Updated March 11, 2026 • 19 sources • free links only

Section 1

Open catalogs

4 sources

Public catalogs and filtered free archives that you can browse directly.

Open catalog

UC Irvine Open

These links mirror the first visible titled course entries on UC Irvine Open's course list. UCI currently exposes 86 internal course pages across 18 top-level sections.

86 internal course pages on the list
18 top-level sections on the page
6 first visible course links listed below

First visible course links

Archive

Stanford Engineering Everywhere

These listings mirror all current course pages on Stanford Engineering Everywhere. Stanford says the SEE pilot has ended, so this is a stable free archive.

9 courses on the official SEE page
4 subject groups on the course page
Archive Stanford says no new courses will be added
Downloads PDFs, videos, and course ZIPs are available

Introduction to Computer Science

Artificial Intelligence

Linear Systems and Optimization

Logic

Filtered free-only

Carnegie Mellon OLI: Open & Free

These listings come from Carnegie Mellon OLI's official open-free archive. Variable-price or mixed-access cards were excluded so this section stays free-only.

43 explicit open and free course cards
13 subject areas represented on those cards
Filtered variable-price or mixed-access cards excluded
8 selected open and free courses listed below

Short-course catalog

OpenLearn

These listings mirror the first visible cards on OpenLearn's full catalogue. The live results counter currently shows 932 items, and the catalog skews broader and shorter-form than the semester-style libraries below.

932 items in the current results counter
9 subject areas in the catalogue filters
4 duration bands from 1-3 hours to 24+ hours
6 first visible cards listed below

First visible cards in the default newest view

Section 2

edX schools

2 sources

School pages with visible course cards and program listings.

edX school page

HarvardX on edX

These lists mirror the first visible course and program cards on the HarvardX school page. edX currently shows 159 courses and 27 programs there in total.

159 courses on the school page
27 programs on the school page
151 additional courses behind "show more"
19 additional programs behind "show more"

edX school page

BrownX on edX

These listings mirror the BrownX course cards currently published on the BrownX school page. edX currently shows five BrownX course cards there and no separate program cards.

5 course cards on the school page
0 separate program cards on the school page
3 weeks estimated length on every listed course
2-3 hrs/week listed weekly effort on every course

Section 3

Course libraries

2 sources

Long-form libraries with the deeper lists collapsed by default.

Full course library

Yale Open Courses

These listings mirror the courses currently published on Yale Open Courses. Yale notes that Introduction To Classical Music and Moral Foundations of Political Philosophy were recently removed from this catalog and moved to Coursera.

40 courses on the Yale page
22 departments represented
36 named instructors
2 recently moved to Coursera

African American Studies

American Studies

Astronomy

Biomedical Engineering

Chemistry

Classics

Ecology and Evolutionary Biology

Economics

Show the remaining 14 Yale departments

English

Environmental Studies

Geology and Geophysics

History

History of Art

Italian Language and Literature

Molecular, Cellular and Developmental Biology

Philosophy

Physics

Political Science

Psychology

Religious Studies

Sociology

Spanish and Portuguese

Full course library

MIT Open Learning Library

These listings mirror the courses currently included on MIT OpenCourseWare's Open Learning Library page. MIT currently exposes 21 offerings spanning business, engineering, science, teaching, and other open course areas.

21 courses on the MIT page
7 top-level subject areas
39 named instructors
8 / 7 / 6 non-credit, undergraduate, and graduate courses

Engineering

Science

Teaching and Education

Show the remaining 4 MIT subject areas

Business

Mathematics

Fine Arts

Social Science

Section 4

Textbooks & notes

8 sources

Open textbook libraries, browser-based labs, and note-taking guides.

Textbooks & notes

Open textbooks, notebook labs, and note-taking

These free resources add full textbook libraries, browser-based lab work, and public note-taking guides without paywalls.

43.4M students OpenStax says it has helped since 2012
1777 open textbooks in the Open Textbook Library
3000+ textbooks in LibreTexts
32 interactive R tutorials in Introduction to Modern Statistics

Open textbook libraries

  • OpenStax subjectsPeer-reviewed, openly licensed, 100% free textbooks with K-12 and higher-ed coverage
  • Open Textbook Library1,777 open textbooks from the Open Education Network that are free to use, download, and adapt
  • LibreTexts17 subject libraries, 3,000+ textbooks, and 300K+ homework questions
  • OpenIntro books5 introductory statistics textbook lines plus 3 mathematics titles with free PDFs

Notebook labs and interactive materials

Study notes and note-taking guides

Section 5

GED prep

3 sources

Direct GED study plus subject refreshers.

GED prep

USAHello, Khan Academy, and HippoCampus

These free options cover direct GED prep plus public subject pages for math, language arts, science, and social studies review.

4 GED subjects in USAHello's prep program
68 video lessons in USAHello GED prep
700+ quiz questions in USAHello GED prep
11 public subject starts linked below from Khan Academy and HippoCampus

USAHello GED prep

  • GED prep classesMath, Science, Social Studies, and Language Arts • English and Spanish • 68 video lessons • 700+ quiz questions

Khan Academy subject starts

  • ArithmeticFoundational math review for whole numbers, fractions, decimals, and percents
  • Algebra basicsVariables, expressions, equations, and introductory graphing
  • Basic geometryAngles, area, volume, coordinate plane, and shape basics
  • GrammarParts of speech, punctuation, syntax, and common writing rules
  • High school biologyCells, heredity, ecology, and other core biology review topics

HippoCampus subject pages

  • ArithmeticPublic subject page with free arithmetic study materials
  • Algebra & GeometryOpen algebra and geometry subject page with course collections and worked examples
  • BiologyFree biology subject page for life science review
  • Earth ScienceFree earth science study page with multimedia course collections
  • History & GovernmentSocial studies review through history and government course collections
  • EnglishPublic English subject page for reading and writing support