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Elasticsearch license, foundation and stars

Search and vector · AGPL v3 or SSPL v1 or Elastic License 2.0 (open source) · backed by Elastic · 77,986 stars

GitHub

Free and Open Source, Distributed, RESTful Search Engine

License history

LICENSE file
Change
SSPL v1 or Elastic License 2.0 to AGPL v3 or SSPL v1 or Elastic License 2.0AGPL v3 added as a third option, making Elasticsearch open source again.LICENSE commitAnnouncement
Apache 2.0 to SSPL v1 or Elastic License 2.0Elastic moved Elasticsearch and Kibana off Apache 2.0 to a choice of SSPL or the Elastic License, from 7.11.LICENSE commitAnnouncement

Forks it prompted

ProjectWhat
OpenSearchApr 12, 2021: Forked from Elasticsearch 7.10.2. Source

Latest release

v9.5.4 published Sep 15, 2026

ProjectStars
OpenSearchOpenSearch Foundation · fork of ElasticsearchApache 2.013.8k
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MilvusLF AI & DataApache 2.046.3k
QdrantQdrantApache 2.034.8k
chromaApache 2.029.4k
typesenseGPL-3.026.6k
pgvectorNOASSERTION23.2k
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About and history
Repository
elastic/elasticsearch · created Feb 8, 2010
Website
elastic.co/products/elasticsearch
Language
Java
Foundation
None; run by Elastic
Company
Elastic · on Companies · on Acquisitions · on awards · on blogs · on Attested · on Quarterly · on Downtime · on Leaders · on marketplaces · on Paydays · on Releases · on Nines · on Stories · on TechConf · on Titlewave
GitHub detects
NOASSERTION (a custom or multi-license file; the license above is read from the file itself)
Stars per week
46 (OSS Insight weekly star history, Aug 31 to Sep 21, 2026)

Weekly snapshots

Week ofStars
Sep 21, 202677,986

Changes

What changed
TrackedAdded: elastic/elasticsearch

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