Top Open Source Projects using Scala

A curated collection of the 2 best free and open-source projects built using Scala. Discover popular repositories, architecture patterns, and trending software in 2026.

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AutoMQ

Apache-2.0

★ 10,576

AutoMQ is a serverless Kafka alternative built on S3 that offers 10x cost savings, easy scalability, and full Kafka compatibility.

JavaScalaPythonShell+12

Apache Pinot

Apache-2.0

★ 6,128

Sub-second SQL queries on fresh streaming data at petabyte scale, built for high-concurrency user-facing apps and AI agent backends.

JavaTypescriptScalaPython+13