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copyleft license

license that any redistributed derivative of the work must also fulfill (it can be free or proprietary)
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copyleft license

Summary

copyleft license is a type of license[1]. It draws 15 Wikipedia views per month (type_of_license category, ranking #10 of 9).[2]

Key Facts

  • copyleft license's instance of is recorded as type of license[3].
  • copyleft license's subclass of is recorded as software license[4].
  • copyleft license's has part is recorded as share-alike[5].
  • copyleft license's Freebase ID is recorded as /m/03bwyw2[6].
  • copyleft license's has characteristic is recorded as copyleft[7].
  • copyleft license's different from is recorded as permissive free software license[8].
  • copyleft license's different from is recorded as Kopimi[9].
  • copyleft license's model item is recorded as Creative Commons Attribution-NonCommercial-ShareAlike[10].
  • copyleft license's Open Science Thesaurus ID is recorded as RVB7XN2W-R[11].

Why It Matters

copyleft license draws 15 Wikipedia views per month (type_of_license category, ranking #10 of 9).[2] It has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[12] It is known by 29 alternative names across languages and contexts.[13]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . Freebase Data Dumps. wikidata.org.
  5. [7] ↑ . Q25839994. books.google.fr. Provenance: wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [12] ↑ . Wikidata sitelinks. wikidata.org.
  3. [13] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). copyleft license. Retrieved May 3, 2026, from https://4ort.xyz/entity/copyleft-license
MLA “copyleft license.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/copyleft-license.
BibTeX @misc{4ortxyz_copyleft-license_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{copyleft license}}, year = {2026}, url = {https://4ort.xyz/entity/copyleft-license}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): copyleft license — https://4ort.xyz/entity/copyleft-license (retrieved 2026-05-03)

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