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@ossf

Open Source Security Foundation (OpenSSF)

OpenSSF is a community of software developers and security engineers who are working together to secure open source software for the greater public good.
OpenSSF Logo

OpenSSF is committed to working both upstream and with existing communities to advance open source security for all.

We foster collaboration, establish best practices, and develop innovative solutions to secure the development, maintenance, and consumption of open source software. OpenSSF is part of the nonprofit Linux Foundation.

Working Groups:

For any questions, concerns, reports, etc., please email operations@openssf.org.

Get Involved

Membership

We encourage all individual contributors to work with their employers to become members. We aim to grow an active, healthy community of contributors, reviewers, and code owners. Learn more about the requirements and responsibilities of membership in our Membership page or see current members.

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  1. wg-best-practices-os-developers wg-best-practices-os-developers Public

    The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

    JavaScript 1.1k 211

  2. ai-ml-security ai-ml-security Public

    Working Group on Artificial Intelligence and Machine Learning (AI/ML) Security

    201 32

  3. wg-securing-critical-projects wg-securing-critical-projects Public archive

    Helping allocate resources to secure the critical open source projects we all depend on.

    412 63

  4. wg-securing-software-repos wg-securing-software-repos Public

    OpenSSF Working Group on Securing Software Repositories

    133 35

  5. tac tac Public

    Technical Advisory Council

    155 89

  6. foundation foundation Public

    OpenSSF Governance and Legal Docs

    75 20

Repositories

Showing 10 of 85 repositories
  • malicious-packages Public

    A repository of reports of malicious packages identified in Open Source package repositories, consumable via the Open Source Vulnerability (OSV) format.

    ossf/malicious-packages's past year of commit activity
    Go 643 Apache-2.0 178 41 35 Updated Nov 12, 2026
  • best-practices-badge Public

    🏆Open Source Security Foundation (OpenSSF) Best Practices Badge (formerly Core Infrastructure Initiative (CII) Best Practices Badge)

    ossf/best-practices-badge's past year of commit activity
    Ruby 1,374 MIT 238 221 17 Updated Nov 12, 2026
  • scorecard-webapp Public

    Website and API for OpenSSF Scorecard

    ossf/scorecard-webapp's past year of commit activity
    HTML 34 Apache-2.0 37 35 (7 issues need help) 28 Updated Nov 12, 2026
  • osv-schema Public

    Open Source Vulnerability schema.

    ossf/osv-schema's past year of commit activity
    Go 276 Apache-2.0 136 53 9 Updated Nov 12, 2026
  • scorecard Public

    OpenSSF Scorecard - Security health metrics for Open Source

    ossf/scorecard's past year of commit activity
    Go 5,828 Apache-2.0 770 255 (7 issues need help) 97 Updated Nov 12, 2026
  • allstar Public

    GitHub App to set and enforce security policies

    ossf/allstar's past year of commit activity
    Go 1,467 Apache-2.0 158 57 (19 issues need help) 4 Updated Nov 11, 2026
  • glossary Public

    A reference for common terms when talking about OpenSSF and open source software security.

    ossf/glossary's past year of commit activity
    JavaScript 6 Apache-2.0 7 3 1 Updated Nov 11, 2026
  • scorecard-infra Public

    OpenSSF Scorecard infrastructure

    ossf/scorecard-infra's past year of commit activity
    Go 3 Apache-2.0 7 14 15 Updated Nov 11, 2026
  • cve-bin-tool Public

    The CVE Binary Tool helps you determine if your system includes known vulnerabilities. You can scan binaries for over 350 common, vulnerable components (openssl, libpng, libxml2, expat and others), or if you know the components used, you can get a list of known vulnerabilities associated with an SBOM or a list of components and versions.

    ossf/cve-bin-tool's past year of commit activity
    Python 1,809 GPL-3.0 712 159 (4 issues need help) 99 Updated Nov 11, 2026
  • wg-best-practices-os-developers Public

    The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

    ossf/wg-best-practices-os-developers's past year of commit activity
    JavaScript 1,088 Apache-2.0 211 60 (2 issues need help) 9 Updated Nov 11, 2026