Open source for data and AI

748 projects · 100 relicensed

Elasticsearch license, foundation and stars

Search and vector · AGPL v3 or SSPL v1 or Elastic License 2.0 (open source) · backed by Elastic · 78,429 stars

GitHub

Free and Open Source, Distributed, RESTful Search Engine

License history

LICENSE file
Open sourceSep 13, 2024

SSPL v1 or Elastic License 2.0 to AGPL v3 or SSPL v1 or Elastic License 2.0

AGPL v3 added as a third option, making Elasticsearch open source again.

Source-availableFeb 2, 2021

Apache 2.0 to SSPL v1 or Elastic License 2.0

Elastic moved Elasticsearch and Kibana off Apache 2.0 to a choice of SSPL or the Elastic License, from 7.11.

Forks it prompted

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

Latest release

v9.5.4 published Sep 15, 2026

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 advisories · on awards · on blogs · on breaches · on calendar · on Attested · on Quarterly · on Downtime · on Leaders · on marketplaces · on Allied · on Paydays · on Metered · on problems · on quadrant · on Releases · on salaries · on Nines · on socials · on standards · on Stories · on sunsets · on TechConf · on terms · on Titlewave
GitHub detects
NOASSERTION (a custom or multi-license file; the license above is read from the file itself)
Stars per week
89 (GitHub weekly snapshots)

Weekly snapshots

Week ofStars
Oct 26, 202678,429
Oct 19, 202678,333
Oct 12, 202678,240
Sep 28, 202678,028
Sep 21, 202677,986

Changes

Stars per weekOct 31, 2026

Gains about 89 stars a week, up from 87.

Stars per weekOct 21, 2026

Gains about 87 stars a week, up from 85.

Stars per weekOct 13, 2026

Gains about 85 stars a week, up from 42.

Stars per weekSep 28, 2026

Gains about 42 stars a week, down from 46.

TrackedSep 24, 2026

Now tracked, from elastic/elasticsearch on GitHub.