Open source for data and AI

Projects749Relicensed100

749 projects · 100 relicensed

Akka license, foundation and stars

Query and processing engines · Business Source License 1.1 (source-available) · backed by Akka (Lightbend) · 13,283 stars

GitHub

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

License history

LICENSE file
Source-availableSep 7, 2022

Apache 2.0 to Business Source License 1.1

Lightbend moved Akka 2.7 from Apache 2.0 to BSL 1.1 with a three year change date; repo since renamed akka-core.

AnnouncementLICENSE commit ↗

Forks it prompted

ProjectWhat
Apache PekkoOct 31, 2022: Forked from 2.6.x. Source

Latest release

v2.10.22 published Sep 9, 2026

More in query and processing engines

Apache 2.01,662 starsApache PekkoBuild highly concurrent, distributed, and resilient message-driven applications using Java/Scala.fork of Akka · +4 a weekCustom or mixed (see the LICENSE file)62k starspathwayPython ETL framework for stream processing, real-time analytics, LLM pipelines, and RAG.-36 a weekBSD 3-Clause50.3k starspandasFlexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more.+85 a weekApache 2.044.4k starsApache SparkApache Spark - A unified analytics engine for large-scale data processing.Apache · +65 a weekMIT43k starsDuckDBDuckDB is a high-performance analytical database system.DuckDB Foundation · +180 a week · v1.5.5, Jul 22, 2026MIT40.3k starsPolarsExtremely fast Query Engine for DataFrames, written in Rust.Polars · +67 a week · py-1.44.2, Sep 9, 2026Apache 2.017.3k starsApache ArrowApache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics.Apache · +20 a week · apache-arrow-25.0.1, Aug 10, 2026Apache 2.016.8k starsprestoThe official home of the Presto distributed SQL query engine for big data.+5 a week
ProjectStars
Apache PekkoBuild highly concurrent, distributed, and resilient message-driven applications using Java/Scala.fork of AkkaApache 2.01,662
pathwayPython ETL framework for stream processing, real-time analytics, LLM pipelines, and RAG.Custom or mixed (see the LICENSE file)62k
pandasFlexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more.BSD 3-Clause50.3k
Apache SparkApache Spark - A unified analytics engine for large-scale data processing.ApacheApache 2.044.4k
DuckDBDuckDB is a high-performance analytical database system.DuckDB FoundationMIT43k
PolarsExtremely fast Query Engine for DataFrames, written in Rust.PolarsMIT40.3k
Apache ArrowApache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics.ApacheApache 2.017.3k
prestoThe official home of the Presto distributed SQL query engine for big data.Apache 2.016.8k
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) · on Companies · on Paydays · on socials
GitHub detects
NOASSERTION (a custom or multi-license file; the license above is read from the file itself)
Stars per week
1 (GitHub weekly snapshots)

Weekly snapshots

Week ofStars
Nov 2, 202613,283
Oct 26, 202613,283
Oct 19, 202613,280
Oct 5, 202613,280
Sep 21, 202613,280

Changes

Stars per weekOct 29, 2026

Gains about 1 stars a week, up from 0.

Stars per weekOct 10, 2026

Gains about 0 stars a week.

ReleaseSep 25, 2026

Latest release on GitHub: v2.10.22.

RelicensedSep 25, 2026

Relicensed from Apache 2.0 to Business Source License 1.1.

TrackedSep 25, 2026

Now tracked, from akka/akka-core on GitHub.