eclipse-vertx / vert.x

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

Activiti / Activiti

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.

traccar / traccar

Open source GPS tracking platform - self-hosted or managed, 200+ device protocols

mapstruct / mapstruct

An annotation processor for generating type-safe bean mappers

apache / hudi

Upserts, Deletes And Incremental Processing on Big Data.

liquibase / liquibase

Main Liquibase Source

jankotek / mapdb

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

freeplane / freeplane

Application for Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way.

aws / aws-sdk-java

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

jetty / jetty.project

Eclipse Jetty® - Web Container & Clients - supports HTTP/3, HTTP/2, HTTP/1, websocket, servlets, and more

Netflix / maestro

Maestro: Netflix’s Workflow Orchestrator

Loophole-LLC / Bastillion

Bastillion gives you a clean, browser-based way to manage SSH access across all your systems—like a bastion host with a friendly dashboard.

eclipse-openj9 / openj9

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.

alldatacenter / alldata

🔥🔥 AllData可定义数据中台，以数据平台为底座，以数据中台为桥梁，以机器学习平台为工厂，以大模型应用为上游产品，提供全链路数字化解决方案。产品正式演示体验、社群咨询、商务采购：https://docs.qq.com/doc/DVHlkSEtvVXVCdEFo

88250 / symphony

🎶 一款用 Java 实现的现代化社区（论坛/问答/BBS/社交网络/博客）系统平台。A modern community (forum/Q&A/BBS/SNS/blog) system platform implemented in Java. https://ld246.com

spring-io / start.spring.io

https://start.spring.io

dedicatedcode / reitti

Reitti is a comprehensive personal location tracking and analysis application that helps you understand your movement patterns and significant places. The name "Reitti" comes from Finnish, meaning "route" or "path".

Azure / azure-sdk-for-java

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.

apache / activemq

Apache ActiveMQ

eclipse-jdtls / eclipse.jdt.ls

Java language server

hapifhir / hapi-fhir

🔥 HAPI FHIR - Java API for HL7 FHIR Clients and Servers

MarquezProject / marquez

Collect, aggregate, and visualize a data ecosystem's metadata

vigna / fastutil

fastutil extends the Java™ Collections Framework by providing type-specific maps, sets, lists and queues.

onthegomap / planetiler

Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast

Pugmatt / BedrockConnect

Join any Minecraft Bedrock Edition server IP on Xbox One, Nintendo Switch, and PS4/PS5

haraldk / TwelveMonkeys

TwelveMonkeys ImageIO: Additional plug-ins and extensions for Java's ImageIO

fr3ts0n / AndrOBD

Android OBD diagnostics with any ELM327 adapter

ctripcorp / x-pipe

X-Pipe是由携程框架部门研发的Redis多数据中心复制管理系统。基于Redis的Master-Slave复制协议，实现低延时、高可用的Redis多数据中心、跨公网数据复制，并且提供一键机房切换，复制监控、异常报警等功能。开源版本和携程内部生产环境版本一致。

eclipse-openvsx / openvsx

An open-source registry for VS Code extensions

openjdk / loom

https://openjdk.org/projects/loom

bit4woo / knife

A burp extension that add some useful function to Context Menu 添加一些右键菜单让burp用起来更顺畅

ratpack / ratpack

Lean & powerful HTTP apps

openremote / core

100% open-source IoT Platform - Integrate your devices, add intelligence, build custom apps

codenameone / CodenameOne

Open-source framework for native apps from one Java codebase, with a custom-rendered UI you control across iOS, Android, desktop, web, and watches.

besu-eth / besu

An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://github.com/besu-eth/besu/wiki

stacksimplify / aws-eks-kubernetes-masterclass

AWS EKS Kubernetes - Masterclass | DevOps, Microservices

googlemaps / google-maps-services-java

Java client library for Google Maps API Web Services

git-commit-id / git-commit-id-maven-plugin

Maven plugin which includes build-time git repository information into an POJO / *.properties). Make your apps tell you which version exactly they were built from! Priceless in large distributed deployments... :-)

dingodb / dingo

A multi-modal vector database that supports upserts and vector queries using unified SQL (MySQL-Compatible) on structured and unstructured data, while meeting the requirements of high concurrency and ultra-low latency.

MorphiaOrg / morphia

MongoDB object-document mapper in Java based on https://github.com/mongodb/mongo-java-driver

aws / serverless-java-container

A Java wrapper to run Spring, Spring Boot, Jersey, and other apps inside AWS Lambda.

jrvansuita / MaterialAbout

🔖 It's a material-design about screen to use on your Android apps. A developer profile and application information easy to integrate.

hawtio / hawtio

Hawtio web console helps you manage your JVM stuff and stay cool!

tess1o / geopulse

A self-hosted, privacy-first location timeline platform: an open-source alternative to Google Timeline with automatic trip detection, Immich integration, and rich analytics.

ongres / stackgres

StackGres Operator, Full Stack PostgreSQL on Kubernetes // !! Mirror repository of https://gitlab.com/ongresinc/stackgres, only accept Merge Requests there.

bootique / bootique

Bootique is a minimally opinionated platform for modern runnable Java apps.

mapsforge / mapsforge

Vector map library and writer - running on Android and Desktop.

aliyun / aliyun-openapi-java-sdk

The Alibaba Cloud V1.0 SDK will soon enter the Basic Security Maintenance phase and is no longer recommended for use. V2.0 SDK is available here: https://github.com/aliyun/alibabacloud-java-sdk

eclipse-milo / milo

Eclipse Milo™ - an open source implementation of OPC UA (IEC 62541).

projectdiscovery / nuclei-burp-plugin

Nuclei plugin for BurpSuite

mapstruct / mapstruct-examples

Examples for using MapStruct

psi-probe / psi-probe

Advanced manager and monitor for Apache Tomcat, forked from Lambda Probe

spring-cloud / spring-cloud-openfeign

Support for using OpenFeign in Spring Cloud apps

Java-Edge / Java-Concurrency-Progamming-Tutorial

大厂一线工程师四年磨一剑精心编排 Java 高并发编程教程。详细文档讲解请阅读本人的知识库仓：https://github.com/Wasabi1234/Java-Interview-Tutorial

GerritCodeReview / gerrit

Gerrit Code Review - (mirror of https://gerrit.googlesource.com/gerrit)

android / android-test

An extensive framework for testing Android apps

sirixdb / sirix

SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.

MCreator / MCreator

MCreator is an open-source software used to make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons, resource packs, and data packs using an intuitive easy-to-learn interface or with an integrated code editor. It is used worldwide by Minecraft players, aspiring mod developers, for education, online classes, and STEM workshops.

apache / ofbiz-framework

Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.

fm-sys / pairdrop-android

Android client for local file sharing via https://pairdrop.net and self-hosted snapdrop