License blobs

Referencing Software Heritage

If you use any of the datasets indexed on this website for research purposes, please acknowledge Software Heritage as recommended in the publications page, which means doing the next two things:

1. Add a footnote on the title page of your paper, formatted as: “This work was made possible by Software Heritage, the universal source code archive: https://www.softwareheritage.org”
2. Cite at least one of the following papers:
   • Roberto Di Cosmo, Stefano Zacchiroli. Software Heritage: Why and How to Preserve Software Source Code. iPRES 2017. (BibTeX)
   • Jean-François Abramatic, Roberto Di Cosmo, Stefano Zacchiroli. Building the universal archive of source code. Communications of the ACM 61(10): 29-31 (2018). (BibTeX)

Specific datasets might recommend additional citations, to credit their creators.

5 datasets

• License blobs #

  Dataset size

  30 GiB

  Export date

  2025-05-18

  Derived of

  Full compressed graph [2025-05-18]

  SWH Annex URL

  https://annex.softwareheritage.org/public/dataset/license-blobs/2025-05-18/

  Specific citation instructions

  If you use this dataset for research purposes, please cite one of the following papers: Stefano Zacchiroli. A Large-scale Dataset of (Open Source) License Text Variants. In proceedings of the MSR 2022. Co-located with ICSE 2022. (Paper, BibTeX); or Jesús M. González-Barahona, Sergio Raúl Montes León, Gregorio Robles, Stefano Zacchiroli. The Software Heritage License Dataset (2022 edition). In Empirical Software Engineering 28(6): 147 (2023). (Paper, BibTeX).

  Download

  The HTTP links point to directories listing all available files.

  wget --recursive --no-parent --reject "index.html*" https://annex.softwareheritage.org/public/dataset/license-blobs/2025-05-18/

• License blobs #

  Dataset size

  27.6 GiB

  Export date

  2024-12-06

  Derived of

  Full compressed graph [2024-12-06]

  SWH Annex URL

  https://annex.softwareheritage.org/public/dataset/license-blobs/2024-12-06/

  Specific citation instructions

  If you use this dataset for research purposes, please cite one of the following papers: Stefano Zacchiroli. A Large-scale Dataset of (Open Source) License Text Variants. In proceedings of the MSR 2022. Co-located with ICSE 2022. (Paper, BibTeX); or Jesús M. González-Barahona, Sergio Raúl Montes León, Gregorio Robles, Stefano Zacchiroli. The Software Heritage License Dataset (2022 edition). In Empirical Software Engineering 28(6): 147 (2023). (Paper, BibTeX).

  Download

  The HTTP links point to directories listing all available files.

  wget --recursive --no-parent --reject "index.html*" https://annex.softwareheritage.org/public/dataset/license-blobs/2024-12-06/

• License blobs #

  Dataset size

  16.4 GiB

  Export date

  2022-12-07

  Derived of

  Full compressed graph [2022-12-07]

  SWH Annex URL

  https://annex.softwareheritage.org/public/dataset/license-blobs/2022-12-07/

  Specific citation instructions

  If you use this dataset for research purposes, please cite one of the following papers: Stefano Zacchiroli. A Large-scale Dataset of (Open Source) License Text Variants. In proceedings of the MSR 2022. Co-located with ICSE 2022. (Paper, BibTeX); or Jesús M. González-Barahona, Sergio Raúl Montes León, Gregorio Robles, Stefano Zacchiroli. The Software Heritage License Dataset (2022 edition). In Empirical Software Engineering 28(6): 147 (2023). (Paper, BibTeX).

  Download

  The HTTP links point to directories listing all available files.

  wget --recursive --no-parent --reject "index.html*" https://annex.softwareheritage.org/public/dataset/license-blobs/2022-12-07/

• License blobs #

  Dataset size

  15.2 GiB

  Export date

  2022-04-25

  Derived of

  Full compressed graph [2022-04-25]

  SWH Annex URL

  https://annex.softwareheritage.org/public/dataset/license-blobs/2022-04-25/

  Specific citation instructions

  If you use this dataset for research purposes, please cite one of the following papers: Stefano Zacchiroli. A Large-scale Dataset of (Open Source) License Text Variants. In proceedings of the MSR 2022. Co-located with ICSE 2022. (Paper, BibTeX); or Jesús M. González-Barahona, Sergio Raúl Montes León, Gregorio Robles, Stefano Zacchiroli. The Software Heritage License Dataset (2022 edition). In Empirical Software Engineering 28(6): 147 (2023). (Paper, BibTeX).

  Download

  The HTTP links point to directories listing all available files.

  wget --recursive --no-parent --reject "index.html*" https://annex.softwareheritage.org/public/dataset/license-blobs/2022-04-25/

• License blobs #

  Dataset size

  14.1 GiB

  Export date

  2021-03-23

  Derived of

  Full compressed graph [2021-03-23]

  SWH Annex URL

  https://annex.softwareheritage.org/public/dataset/license-blobs/2021-03-23/

  Specific citation instructions

  If you use this dataset for research purposes, please cite one of the following papers: Stefano Zacchiroli. A Large-scale Dataset of (Open Source) License Text Variants. In proceedings of the MSR 2022. Co-located with ICSE 2022. (Paper, BibTeX); or Jesús M. González-Barahona, Sergio Raúl Montes León, Gregorio Robles, Stefano Zacchiroli. The Software Heritage License Dataset (2022 edition). In Empirical Software Engineering 28(6): 147 (2023). (Paper, BibTeX).

  Download

  The HTTP links point to directories listing all available files.

  wget --recursive --no-parent --reject "index.html*" https://annex.softwareheritage.org/public/dataset/license-blobs/2021-03-23/

By accessing the datasets, you agree with the Software Heritage Ethical Charter for using the archive data, the terms of use for bulk access, and the Software Heritage principles for large language models.

To learn how to use the datasets read the documentation.