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Esper

Java software for complex event processing
CreativeWork free_software Q19605478
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Esper

Summary

Esper is a free software[1]. Esper ranks in the top 10% of free_software entities by monthly Wikipedia readership (2 views/month).[2]

Key Facts

  • Esper's instance of is recorded as free software[3].
  • Esper's copyright license is recorded as GNU General Public License[4].
  • Esper's programmed in is recorded as Java[5].
  • Esper's software version identifier is recorded as 5.3.0[6].
  • Esper's software version identifier is recorded as 5.4.0[7].
  • Esper's software version identifier is recorded as 5.5.0[8].
  • Esper's software version identifier is recorded as 6.0.0[9].
  • Esper's software version identifier is recorded as 6.0.1[10].
  • Esper's software version identifier is recorded as 6.1.0[11].
  • Esper's software version identifier is recorded as 7.0.0[12].
  • Esper's software version identifier is recorded as 7.1.0[13].
  • Esper's software version identifier is recorded as 8.0.0[14].
  • Esper's software version identifier is recorded as 8.1.0[15].
  • Esper's software version identifier is recorded as 8.2.0[16].
  • Esper's software version identifier is recorded as 8.3.0[17].
  • Esper's software version identifier is recorded as 8.4.0[18].
  • Esper's software version identifier is recorded as 8.5.0[19].
  • Esper's software version identifier is recorded as 8.6.0[20].
  • Esper's software version identifier is recorded as 8.7.0[21].
  • Esper's software version identifier is recorded as 8.8.0[22].
  • Esper's software version identifier is recorded as 5.2.5[23].
  • Esper's software version identifier is recorded as 5.2.6[24].
  • Esper's software version identifier is recorded as 5.4.2[25].
  • Esper's software version identifier is recorded as 5.4.3[26].
  • Esper's software version identifier is recorded as 5.5.1[27].

Why It Matters

Esper ranks in the top 10% of free_software entities by monthly Wikipedia readership (2 views/month).[2]

Related Entities

free software Java Java virtual machine

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] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  5. [7] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  6. [8] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  7. [9] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  8. [10] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  9. [11] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  10. [12] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  11. [13] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  12. [14] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  13. [15] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  14. [16] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  15. [17] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  16. [18] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  17. [19] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  18. [20] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  19. [21] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  20. [22] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  21. [23] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  22. [24] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  23. [25] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  24. [26] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  25. [27] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.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). Esper. Retrieved May 3, 2026, from https://4ort.xyz/entity/esper
MLA “Esper.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/esper.
BibTeX @misc{4ortxyz_esper_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Esper}}, year = {2026}, url = {https://4ort.xyz/entity/esper}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Esper — https://4ort.xyz/entity/esper (retrieved 2026-05-03)

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