Research institute · Science policy · Washington, DC · Est. 2013
The Center for Open Science (COS) is a nonprofit organization founded in 2013 to increase the openness, integrity, and trustworthiness of research. COS advances “Lifecycle Open Science,” aiming to make research plans, outputs (such as data, materials, and code), and outcomes publicly accessible and linked in persistent locations so that others can assess and reuse evidence.
COS pursues this goal using a systems approach spanning (1) open science infrastructure, (2) community building to make open practices normative, and (3) stakeholder engagement to make open practices rewarding and, over time, required. Its flagship software platform is the Open Science Framework (OSF), an open-source research workflow tool that supports preregistration via registration workflows, public and community-run preprint services, and linking research artifacts across tools and repositories. In addition to infrastructure, COS conducts and coordinates metascience and evidence-building work (e.g., research credibility evaluation) and provides policy and community guidance intended to strengthen adoption pathways for open research practices.
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<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/what-is-in-the-registered-revisions-meta-trial-development-and-pilot" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Thumbnails%20(17).png" alt="What is in the Registered
Applications Open: Preregistration and Outcome Reporting Advisory Group<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/applications-open-preregistration-and-outcome-reporting-advisory-group" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Thumbnails%20(14).png" alt="Applications open: prere
A New Chapter for COS in Europe<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/a-new-chapter-for-cos-in-europe" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Thumbnails%20(13).png" alt="A New Chapter for COS in Europe" class="hs-featured-image" styl
Lifecycle Open Science in Action: Researcher Q&A with Andres Colubri<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/lifecycle-open-science-in-action-researcher-qa-with-andres-colubri" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Post%20%20Q%26A%20(21).png" alt="Lifecycle Open Science
Call for Volunteers: TOP Guidelines Advisory Board<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/call-for-volunteers-top-guidelines-advisory-board-2026" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Post%20%20Use%20Case%20(46).png" alt="Call for Volunteers: TOP Guide
OSF’s Next Chapter: Building for Impact and Long-Term Resilience<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/osfs-next-chapter-building-for-impact-and-long-term-resilience" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/long-term%20resiliance%20thumbnail.png" alt="OSF's Next Chapter on
OSF Changes: A Note to Users<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/osf-changes-a-note-to-users" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Note%20to%20users%20graphic.png" alt="OSF Changes: A Note to Users" class="hs-featured-image" style="w
Predicting Replicability Challenge: Round 3 Results<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/predicting-replicability-challenge-round-3-results" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/RPHB%20Round%203%20Blog%20Header.png" alt="Predicting Replicability Challenge:
Announcing the Coalition for Resilient Research Data Infrastructure (CRRDI) Strategic Plan<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/announcing-the-coalition-for-resilient-research-data-infrastructure-crrdi-strategic-plan" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/Blog%20Post%20%20Use%20Case%20(42).png" a
Introducing the Metascience Bulletin Board<div class="hs-featured-image-wrapper"> <a href="https://www.cos.io/blog/introducing-the-metascience-bulletin-board" title="" class="hs-featured-image-link"> <img src="https://www.cos.io/hubfs/MA%20blog.png" alt="Metascience Alliance" class="hs-featured-image" style="width:auto !
COS announced results from the SCORE program (865 researchers) published in Nature and additional preprints, reporting evidence on reproducibility, robustness, and replicability in social and behavioral science and describing coordinated credibility assessment efforts.
The Center for Open Science Welcomes Chris Bourg and Marcus Munafò to its Board of DirectorsCOS announced appointments of Chris Bourg and Marcus Munafò to its Board of Directors, tying the change to COS’s 2026–2028 strategic focus on advancing Lifecycle Open Science.
New Paper Proposes a Framework for Assessing the Trustworthiness of ResearchCOS announced a PNAS-authored framework for evaluating trustworthiness of research findings across research, researcher, and organizational levels, emphasizing accountability, evaluability, and error-detectability rather than single proxy signals.
Center for Open Science Awarded Grant from Robert Wood Johnson Foundation to Preserve and Safeguard Publicly Funded Scientific DataCOS announced an RWJF grant to develop a community-driven strategic plan for preserving, maintaining access to, and improving the usability of federally-funded scientific data.
COS Statement on “Restoring Gold Standard Science” Executive OrderCOS published a statement responding to the May 23, 2025 executive order, discussing why COS views the proposed framing and criteria as counterproductive for open science purposes like accelerating discovery.