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ACT-R

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ACT-R

Summary

ACT-R is a free software[1]. ACT-R ranks in the top 6% of free_software entities by monthly Wikipedia readership (100 views/month).[2]

Key Facts

  • ACT-R's instance of is recorded as free software[3].
  • ACT-R's instance of is recorded as cognitive architecture[4].
  • ACT-R's developer is recorded as John R. Anderson[5].
  • ACT-R's copyright license is recorded as GNU Lesser General Public License[6].
  • ACT-R's programmed in is recorded as Common Lisp[7].
  • ACT-R's software version identifier is recorded as 7.27.7[8].
  • ACT-R's Freebase ID is recorded as /m/03f09c[9].
  • ACT-R's official website is recorded as http://act-r.psy.cmu.edu/[10].
  • ACT-R's Open Hub ID is recorded as act-r[11].
  • ACT-R's Quora topic ID is recorded as ACT-R[12].
  • ACT-R's copyright status is recorded as copyrighted[13].
  • ACT-R's CSO topic ID is recorded as act-r[14].

Why It Matters

ACT-R ranks in the top 6% of free_software entities by monthly Wikipedia readership (100 views/month).[2] ACT-R has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[15] ACT-R is known by 4 alternative names across languages and contexts.[16]

Related Entities

Common Lisp free software

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] ↑ . Open Hub. Retrieved . openhub.net. Provenance: wikidata.org.
  6. [8] ↑ . act-r.psy.cmu.edu. Retrieved . act-r.psy.cmu.edu. Provenance: wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . Quora. wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [15] ↑ . Wikidata sitelinks. wikidata.org.
  3. [16] ↑ . 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). ACT-R. Retrieved May 3, 2026, from https://4ort.xyz/entity/act-r
MLA “ACT-R.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/act-r.
BibTeX @misc{4ortxyz_act-r_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{ACT-R}}, year = {2026}, url = {https://4ort.xyz/entity/act-r}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): ACT-R — https://4ort.xyz/entity/act-r (retrieved 2026-05-03)

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