Akka license, foundation and stars

Query and processing engines · Business Source License 1.1 (source-available) · backed by Akka (Lightbend) · 13,279 stars

A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

License history

Date	Change	Sources
Sep 7, 2022	Apache 2.0 to Business Source License 1.1Lightbend moved Akka 2.7 from Apache 2.0 to BSL 1.1 with a three year change date; repo since renamed akka-core.LICENSE commit Announcement	LICENSE commit Announcement

Date	Project	What
Oct 31, 2022	Apache Pekko	Oct 31, 2022: Forked from 2.6.x. Source

v2.10.22 published Sep 9, 2026

Project	License	Stars	Per week	Latest release
Apache Pekkofork of AkkaApache 2.0	Apache 2.0	1,641	-	-
pathwayCustom or mixed (see the LICENSE file)	Custom or mixed (see the LICENSE file)	62.2k	-	-
pandasBSD 3-Clause	BSD 3-Clause	49.8k	-	-
Apache SparkApacheApache 2.0	Apache 2.0	44k	+42	-
DuckDBDuckDB FoundationMIT	MIT	41.7k	+232	v1.5.5Jul 22, 2026
PolarsPolarsMIT	MIT	39.9k	+77	py-1.44.2Sep 9, 2026
Apache ArrowApacheApache 2.0	Apache 2.0	17.2k	+26	apache-arrow-25.0.1Aug 10, 2026
prestoApache 2.0	Apache 2.0	16.7k	-	-

About and history

Repository: akka/akka-core · created Feb 16, 2009
Website: doc.akka.io/libraries
Language: Scala
Foundation: None; run by Akka (Lightbend)
Company: Akka (Lightbend)
GitHub detects: NOASSERTION (a custom or multi-license file; the license above is read from the file itself)
Stars per week: From the second weekly snapshot

Week of	Bar	Stars
Sep 21, 2026		13,279

Date	What changed
Sep 25, 2026	New releasev2.10.22
Sep 25, 2026	RelicensedApache 2.0 to Business Source License 1.1
Sep 25, 2026	TrackedAdded: akka/akka-core