#java

Prometheus instrumentation library for JVM applications

Spring Security

Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process engine for Java. It's open-source and distributed under the Apache license. Activiti runs in any Java application, on a server, on a cluster or in the cloud. It integrates perfectly with Spring, it is extremely lightweight and based on simple concepts.

🚀 Open-source Ethereum consensus client written in Java

⚡ Write Native with TypeScript ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java, Dart). Use what you love ❤️ Angular, React, Solid, Svelte, Vue with: iOS (UIKit, SwiftUI), Android (View, Jetpack Compose), Flutter and you name it compatible.

#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

The java implementation of Apache Dubbo. An RPC and microservice framework.

A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.

A cluster computing framework for processing large-scale geospatial data

Process Orchestration Framework

Free and Open Source, Distributed, RESTful Search Engine

Logstash - transport and process your logs, events, or other data

The Java gRPC implementation. HTTP/2 based RPC

Idiomatic persistence for Java and relational databases

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Aspire is the tool for code-first, extensible, observable dev and deploy.

OpenAPI based HTTP Client code generator

Redis Java client

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

The home of the ICU project source code.

An open source Valkey client library that supports Valkey, and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python

This repository is for active development of the Azure SDK for Java. For consumers of the SDK we recommend visiting our public developer docs at https://docs.microsoft.com/java/azure/ or our versioned developer docs at https://azure.github.io/azure-sdk-for-java.

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

蓝鲸持续集成平台(蓝盾)

Agentic AI Framework for Java Developers

Apache Beam is a unified programming model for Batch and Streaming data processing.

Apache Cordova Android

✅ The programmer-friendly testing framework for Java and the JVM

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 tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.

Java implementation of the OpenFeature SDK