Free and Open Source, Distributed, RESTful Search Engine

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

High Performance Inter-Thread Messaging Library

Zipkin is a distributed tracing system

The official home of the Presto distributed SQL query engine for big data

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

📈 Capturing JVM- and application-level metrics. So you know what's going on.

2048 solver