9 open source projects written in Scala
Every Scala project in the registry, ranked by GitHub stars — license and last push on every entry, data pulled live from the GitHub API every night.
delta ★ 9.0K An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs
finagle ★ 8.9K A fault tolerant, protocol-agnostic RPC system
sbt ★ 5.0K sbt, the interactive build tool
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
tapir ★ 1.5K Rapid development of self-documenting APIs
rudder ★ 712 Rudder is a configuration and security automation platform. Manage your Cloud, hybrid or on-premises infrastructure in a simple, scalable and dynamic way.
airframe ★ 666 Essential Building Blocks for Scala
metorikku ★ 589 A simplified, lightweight ETL Framework based on Apache Spark
build-server-protocol ★ 547 Protocol for IDEs and build tools to communicate about compile, run, test, debug and more.
← all stacks · or see best-of lists
Frequently asked questions
How many open source projects are written in Scala?
This registry tracks 9 Scala projects, with 29,596 GitHub stars between them and a median of 1,473 stars. The most-adopted is delta at 8,999 stars.
Which Scala projects are most actively maintained?
9 of the 9 projects were pushed in the last 90 days. Each entry above shows its exact last-push date, so you can filter out dormant projects before committing to one.
What licence are Scala projects usually under?
9 of the 9 carry an explicit open-source licence across 3 distinct licences, and the licence is shown on every card. Permissive licences (MIT, Apache-2.0) are the safest default for commercial use; check the copyleft ones individually.
Where do I start with a Scala project?
Start from the ranked list above — it orders every tracked Scala project by GitHub stars, with licence, last-push date and category on each card so you can judge adoption and whether it is still maintained.