Open Textbook Library: A collection of openly licensed textbooks covering a wide range of subjects, curated by the University of Minnesota, searchable by subject, title, or author.
OER Commons: Provides a comprehensive database of openly licensed textbooks, searchable by subject, grade level, and educational standard, with options to filter by format and license type.
MERLOT: Offers a collection of peer-reviewed OER textbooks across various disciplines, searchable by subject, material type, and audience, with user ratings and reviews.
OpenStax: Produces high-quality, peer-reviewed textbooks in various subjects, available for free online or at low cost in print format, with options to download PDFs or access interactive online versions.
BCcampus OpenEd: Hosts a collection of openly licensed textbooks developed by British Columbia post-secondary faculty, covering a wide range of subjects, searchable by keyword, subject, or ISBN.
College Open Textbooks: A collaborative initiative that aggregates links to free, peer-reviewed textbooks from various sources, organized by subject area, with options to search by keyword or browse by subject.
LibreTexts: Offers a library of collaboratively developed, openly licensed textbooks and educational resources in STEM fields and beyond, searchable by subject, title, or keyword.
Lumen Learning: Curates and develops OER textbooks and course materials, often as part of complete course packages, designed for use in higher education and aligned with learning outcomes.
Saylor Academy: Provides free, self-paced courses accompanied by openly licensed textbooks covering a range of subjects, available for download or online reading.
Project Gutenberg: While primarily focused on public domain literature, Project Gutenberg offers a vast collection of free ebooks, including textbooks, in various languages and subjects.
Pressbooks Directory: A directory of books created using the Pressbooks platform, which allows users to create, remix, and publish openly licensed books and textbooks, searchable by subject, title, or author.
Khan Academy: While primarily focused on K-12 education, Khan Academy offers courses and materials covering a wide range of subjects, including math, science, humanities, and test preparation, available for free online.
Flickr Creative Commons: Flickr offers a vast collection of photos and videos uploaded by users under various Creative Commons licenses. You can search for content specifically licensed for reuse and modification.
Pixabay: Pixabay provides a large repository of high-quality images and videos, all released under the Creative Commons Zero (CC0) license, which allows for unrestricted use, including commercial purposes, without attribution.
Unsplash: Unsplash offers a collection of high-resolution photos contributed by photographers worldwide, available under the Unsplash License, which is similar to CC0, allowing for free use without attribution.
Pexels: Pexels hosts a collection of free stock photos and videos, all licensed under the Creative Commons Zero (CC0) license, enabling users to download, modify, and use the content for personal and commercial projects without attribution.
Wikimedia Commons: Wikimedia Commons is a media file repository containing freely usable images, sound, and video files contributed by users. Content is typically available under various Creative Commons licenses or in the public domain.
Vimeo Creative Commons: Vimeo allows users to share videos under Creative Commons licenses. You can search specifically for videos with Creative Commons licenses for reuse and modification.
Internet Archive: The Internet Archive hosts a vast collection of multimedia resources, including images, videos, audio recordings, and more, many of which are available under Creative Commons licenses or in the public domain.
NASA Image and Video Library: NASA offers a collection of images, videos, and audio files related to space exploration, all of which are in the public domain and free to use without copyright restrictions.
Europeana: Europeana provides access to millions of digitized items from European museums, galleries, libraries, and archives, including images, videos, documents, and artworks, many of which are available under Creative Commons licenses.