Kepler.gl is a powerful open source geospatial analysis tool for large-scale data sets.

configuration library for JVM languages using HOCON files

JanusGraph: an open-source, distributed graph database

Vert.x examples

Vert.x is a tool-kit for building reactive applications on the JVM

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functional…

Enhancing Java Stream API