Code Property Graph: specification, query language, and utilities
Apache DataFusion Comet Spark Accelerator
A fault tolerant, protocol-agnostic RPC system
An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs
Rapid development of self-documenting APIs
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3