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Africa Commons

Applied Science Commons

Canada Commons

History Commons

Latin America Commons

Mindscape Commons

Oceania Commons

Policy Commons

South Asia Commons

Universities and colleges

Governments, law firms, corporations

Think tanks, NGOs, IGOs, nonprofits

Publishers

Archives and special collections

Bloggers, influencers, authors

Contact Us

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Accessible Archives FAQ

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File Upload Policy

MARC Records

MARC Records Update April 2025

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Products

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Africa Commons

Applied Science Commons

Canada Commons

History Commons

Latin America Commons

Mindscape Commons

Oceania Commons

Policy Commons

South Asia Commons

We Serve

Universities and colleges

Governments, law firms, corporations

Think tanks, NGOs, IGOs, nonprofits

Publishers

Archives and special collections

Bloggers, influencers, authors

Support

Contact Us

Accessibility

Accessible Archives FAQ

Authentication

Content Owners

Customer Portal

Discovery Services

Environmental Statement

File Upload Policy

MARC Records

MARC Records Update April 2025

Mentions

Privacy Policy

Search tips

Standard License Agreement

Terms of Use

Usage Statistics

About Us

Our Team

Our Vision

Our History

Insights

Press and News

Newsletters

Join Us

All Products

Africa Commons

Applied Science Commons

Canada Commons

History Commons

Latin America Commons

Mindscape Commons

Oceania Commons

Policy Commons

South Asia Commons

Universities and colleges

Governments, law firms, corporations

Think tanks, NGOs, IGOs, nonprofits

Publishers

Archives and special collections

Bloggers, influencers, authors

Contact Us

Accessibility

Accessible Archives FAQ

Authentication

Content Owners

Customer Portal

Discovery Services

Environmental Statement

File Upload Policy

MARC Records

MARC Records Update April 2025

Mentions

Privacy Policy

Search tips

Standard License Agreement

Terms of Use

Usage Statistics

Our Team

Our Vision

Our History

Insights

Press and News

Newsletters

Join Us

Terms of use

Privacy policy

© Coherent Digital 2025

About us

Our vision

We specialize in finding and preserving endangered materials—grey literature, primary sources, new media, voices from the Global South—and making them accessible.

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We specialize in

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Grey literature

Every year, policy organizations around the world publish tens of billions of dollars of research in the form of grey literature—hundreds of thousands of reports, studies, white papers, data sets, and other materials, all peer or expert reviewed. But the material is often not citable and tends to be underused. Policy Commons indexes and hosts over 17 million documents from 41,000 organizations, curating and preserving important reports like the George Floyd investigation for future generations. Hundreds of new reports are added every hour.

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Primary sources

Left unpreserved and undigitized, primary-source content deteriorates, decays, and is at risk of being lost forever. History Commons includes over 5 million pages of newspapers, archival materials, letters, diaries, photographs, and other critical historical documents. European collections contain content sourced from The National Archives (UK), available in digital format for the first time. North American collections, including Black and women's historical content from the eighteenth, nineteenth, and early twentieth centuries, is sourced from Accessible Archives.

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Content from the Global South

Research shows that three out of five people live in the Global South—in Africa, Latin America, South Asia, and Oceania. Yet the Global South is severely underrepresented in academic libraries. As librarians around the world work to decolonize their collections, Coherent Digital has created several resources to close the representation gap. Africa Commons, for example, indexes and delivers over 500,000 African items from thousands of sources. It’s mobile friendly and can be viewed in more than 130 languages. We partner with African organizations to digitize and add new content.

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New media

We index and license blogs, videos, and other materials in danger of disappearing. We use hashtags and editorial curation to identify content of lasting value and then preserve it.

Is Grey Literature Peer Reviewed?

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Our products

Explore our Commons and Collections by subject

How we do it

1

We capture content

Our editors find and license important content. We combine manual and automated tools to index and preserve the materials. We respect content creators by linking to their websites and driving traffic to them.

2

We enrich content

We use human and artificial intelligence to add metadata, summaries, extract titles, and entities; identify languages; check links; and enrich in other ways. We constantly improve our cataloging as new technologies and techniques emerge.

3

We publish and share

We provide comprehensive indices with advanced search tools that help researchers and students find and analyze previously hidden content. We help librarians with a full suite of tools ranging from discovery system feeds to impact dashboards. Faculty and librarians can suggest links or publish content in less than a minute.

4

We engage

We provide free access to many resources. We’re indexed by Google Scholar and other search engines. We provide permanent identifiers, resource lists for syllabi, alert tools, and even custom portals with personal branding.  

Explore our latest collections

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LGBTQ+ Social Justice and Culture
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History Commons

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Indigenous Peoples Social Justice and Culture
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History Commons

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Refugees, Migration, and Borders Social Justice and Culture
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History Commons

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Public Health and Social Care
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Applied Science Commons

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Latin American History and Culture
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Latin America Commons

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American County Histories
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History Commons

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African American Newspapers
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History Commons

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African American Newspapers in the South
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History Commons

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The Civil War Collection
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History Commons

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Colonial Newspapers
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History Commons

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Frank Leslie's Weekly
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History Commons

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Women's Magazines and Newspapers
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History Commons

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World War I: Military Camp Newspapers
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History Commons

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African History and Culture
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Africa Commons

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Black South African Magazines
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Africa Commons

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East African Newspapers, Magazines, and Films
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Africa Commons

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Southern African Films and Documentaries
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Africa Commons

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West African Magazines
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Africa Commons

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