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DeCSS

free open-source program to decode DVDs with encryption
CreativeWork free_software Q1179498
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DeCSS

Summary

DeCSS is a free software[1]. DeCSS ranks in the top 5% of free_software entities by monthly Wikipedia readership (130 views/month).[2]

Key Facts

  • DeCSS's image is recorded as DeCSS.PNG[3].
  • DeCSS's instance of is recorded as free software[4].
  • DeCSS's developer is recorded as Jon Lech Johansen[5].
  • DeCSS's copyright license is recorded as GNU General Public License, version 2.0[6].
  • DeCSS's programmed in is recorded as Q15777[7].
  • DeCSS's software version identifier is recorded as 1.1b[8].
  • DeCSS's Commons category is recorded as DeCSS (software)[9].
  • +1999-10-00T00:00:00Z marks the founding of DeCSS[10].
  • DeCSS's publication date is recorded as +1999-10-06T00:00:00Z[11].
  • DeCSS's Freebase ID is recorded as /m/09wvn[12].
  • DeCSS's source code repository URL is recorded as http://web.cs.dal.ca/~hannon/decss.c[13].
  • DeCSS's copyright status is recorded as copyrighted[14].
  • DeCSS's Microsoft Academic ID is recorded as 2777648489[15].

Body

Publication

DeCSS's publication date is recorded as +1999-10-06T00:00:00Z[11].

Why It Matters

DeCSS ranks in the top 5% of free_software entities by monthly Wikipedia readership (130 views/month).[2] DeCSS has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[16] DeCSS is known by 3 alternative names across languages and contexts.[17]

Related Entities

free software Jon Lech Johansen

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] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . Freebase Data Dumps. wikidata.org.
  11. [13] ↑ . Retrieved . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] ↑ . Wikidata sitelinks. wikidata.org.
  3. [17] ↑ . 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). DeCSS. Retrieved May 3, 2026, from https://4ort.xyz/entity/decss
MLA “DeCSS.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/decss.
BibTeX @misc{4ortxyz_decss_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{DeCSS}}, year = {2026}, url = {https://4ort.xyz/entity/decss}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): DeCSS — https://4ort.xyz/entity/decss (retrieved 2026-05-03)

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