Zero Textbook Cost

DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.
Varies by articles; most CC-BY

“SAGE Open is an open access publication from SAGE. It publishes peer-reviewed, original research and review articles in an interactive, open access format. Articles may span the full spectrum of the social and behavioral sciences and the humanities.”
CC-various To find license for a particular article, view the Info & Metrics tab.

This collection of Open Access Journals offers an international perspective and critical lens into a variety of subject areas.
CC-BY

Open Access Journals accommodates a broad spectrum of interdisciplinary journals that focus on a wide range of fields within the clinical and medical sciences, apart including the scientific developments from Pharmaceutical and Life Sciences.
Varies by article; most CC-BY

"Florida Online Journals is a scholarly journals publishing program hosted by the Florida Virtual Campus (FLVC) and the Florida Academic Library Services Cooperative (FALSC)."

“Elsevier enables subscribers and the general public to have free access to archived material in 98 Elsevier journals.”
Journals on this list contain at least some CC-BY NC ND articles. Each journal has a separate way of searching through content to determine licensing

“The Conversation US launched as a pilot project in October 2014. It is an independent source of news and views from the academic and research community, delivered direct to the public.”
Varies by page; most CC-BY NC ND

“Futurity features the latest discoveries by scientists at top research universities in the US, UK, Canada, Europe, Asia, and Australia. The nonprofit site, which launched in 2009, is supported solely by its university partners…in an effort to share research news directly with the public.”
Varies by page; most CC-BY

“Neuroscience and psychology news and views.”
CC-BY NC SA

“The open source way is about applying the principles of open source software development beyond software. Beyond technology. Opensource.com is about sharing how the open source way can change our world in the same way the open source model has changed software.”
CC – various
(Primarily CC-BY SA)

“PLoS is a nonprofit publisher and advocate of Open Access research.”
CC-BY

Primary source material on a wide variety of subjects. The free library that anyone can improve.
CC – various
Each item indicates copyright clearly at the bottom of the page

A Journal of Undergraduate Writing and Composition
“QCW is a refereed journal that publishes essays and multimedia work by undergraduate students affiliated with any post-secondary institution. We also publish reviews, snapshots of writers, and comments”
CC-BY NC

Writing Commons, the open-education home for writers. Our mission is to help college students improve their writing, research, and critical thinking. We publish a variety of webtexts on writing pedagogy. Major topics include Writing Processes, Information Literacy, Research Methods & Methodologies, Collaboration, Genres, Style, and New Media.

ISKME's OER initiatives aim to grow a sustainable culture of sharing and continuous improvement among educators at all levels. In 2007, ISKME launched OER Commons, its digital public library and collaboration platform, informed by the organization's pioneering efforts in knowledge management and educational innovation. OER Commons offers a comprehensive infrastructure for curriculum experts and instructors at all levels to identify high-quality OER and collaborate around their adaptation, evaluation, and use to address the needs of teachers and learners. Diving into OER Commons is an exciting opportunity to collaborate with other educators and learners, at the forefront of a new educational era.

“The New Inquiry is a space for discussion that aspires to enrich cultural and public life by putting all available resources—both digital and material—toward the promotion and exploration of ideas.
The New Inquiry is a 501(c)3 non-profit and is not affiliated with any political party, government agency, university, municipality, religious organization, cadre, or other cult.”
CC-BY NC ND

“The award-winning zine, blog and directory of wonderful things”
CC-BY NC SA

“Project Gutenberg offers over 49,000 free ebooks: choose among free epub books, free kindle books, download them or read them online.”
Public Domain

“Stories of America’s diverse places and people are everywhere. Our stories are found across the landscapes of our nation, in more than 400 national parks, in National Heritage Areas, along historic trails and waterways, and in every neighborhood.”
Public Domain

“CDC increases the health security of our nation. As the nation’s health protection agency, CDC saves lives and protects people from health threats. To accomplish our mission, CDC conducts critical science and provides health information that protects our nation against expensive and dangerous health threats, and responds when these arise.”
Public Domain

“It is the mission of the U.S. Department of Health & Human Services (HHS) to enhance and protect the health and well-being of all Americans. We fulfill that mission by providing for effective health and human services and fostering advances in medicine, public health, and social services.”
Public Domain

"Founded in 2011, The Public Domain Review is an online journal and not-for-profit project dedicated to the exploration of curious and compelling works from the history of art, literature, and ideas. As our name suggests our project is focused on showcasing works which are in the public domain and so are free to re-use for any purpose, even commercially."
Public Domain (For specific information see publicdomainreview.org/legal/ )