Open source scala projects

Every project in the registry tagged scala, ranked by real GitHub adoption.

projects 12 combined stars ★ 73K refresh nightly
01 kafka ★ 34K

Apache Kafka - A distributed event streaming platform

last push3 hours ago languageJava licenseApache-2.0
02 finagle ★ 8.9K

A fault tolerant, protocol-agnostic RPC system

last push3 months ago languageScala licenseApache-2.0
03 zeppelin ★ 6.7K

Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

last push18 hours ago languageJava licenseApache-2.0
04 papermill ★ 6.5K

📚 Parameterize, execute, and analyze notebooks

last push28 days ago languagePython licenseBSD-3-Clause
05 sbt ★ 5.0K

sbt, the interactive build tool

last push2 days ago languageScala licenseApache-2.0
06 mill ★ 2.8K

A better build tool for Java, Scala and Kotlin: Simpler than Maven, easier than Gradle, with 3-7x faster dev workflows than other JVM build tools

last push5 hours ago languageScala licenseMIT
07 docspell ★ 2.3K

Assist in organizing your piles of documents, resulting from scanners, e-mails and other sources with miminal effort.

last push7 days ago languageElm licenseAGPL-3.0
08 metals ★ 2.3K

Scala language server with rich IDE features 🚀

last push11 hours ago languageScala licenseApache-2.0
09 talkyard ★ 1.8K

A community discussion platform: Brings together the main features from StackOverflow, Slack, Discourse, Reddit, and Disqus blog comments.

last push4 months ago languageTypeScript licenseAGPL-3.0
10 sharry ★ 1.4K

Sharry is a self-hosted file sharing web application.

last push5 days ago languageElm licenseGPL-3.0
11 metorikku ★ 589

A simplified, lightweight ETL Framework based on Apache Spark

last push2 months ago languageScala licenseMIT
12 build-server-protocol ★ 554

Protocol for IDEs and build tools to communicate about compile, run, test, debug and more.

last push4 days ago languageScala licenseApache-2.0

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Frequently asked questions

How many open source scala projects are there?

This registry tracks 12 projects tagged scala, with 72,900 GitHub stars between them. The most-adopted is kafka at 34,117 stars.

Are these scala projects free to use?

Yes — 12 of the 12 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which scala project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these scala projects still maintained?

11 of the 12 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.