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

AI-driven database tool and SQL client, The hottest GUI client, supporting MySQL, Oracle, PostgreSQL, DB2, SQL Server, DB2, SQLite, H2, ClickHouse, and more.

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

JDK main-line development https://openjdk.org/projects/jdk

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

High Performance Inter-Thread Messaging Library

A fast dependency injector for Android and Java.

A high performance caching library for Java

QuestDB is a high performance, open-source, time-series database

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

🏗 Build container images for your Java applications.

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat…

Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

OpenRefine is a free, open source power tool for working with messy data and improving it

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing …

jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.

A barebones WebSocket client and server implementation written in 100% Java.

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Java Native Access

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

Alluxio, data orchestration for analytics and machine learning in the cloud

Runtime code generation for the Java virtual machine.

jOOQ is the best way to write SQL in Java

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

Micronaut Application Framework

Statistical Machine Intelligence & Learning Engine

configuration library for JVM languages using HOCON files

JanusGraph: an open-source, distributed graph database

Apache Groovy: A powerful multi-faceted programming language for the JVM platform