Maven

Design Patterns implemented in Javailuwatar/java-design-patterns

A comprehensive collection of design patterns implemented in Java with detailed examples and explanations.

OpenApi GeneratorOpenAPITools/openapi-generator

Automatically generates API client libraries, server stubs, and documentation from OpenAPI specifications.

Gsongoogle/gson

A Java library for converting Java objects to JSON and back, with extensive generics support and no source code modifications required.

JHipsterjhipster/generator-jhipster

A development platform to quickly generate, develop, and deploy modern web applications and microservice architectures.

IntelliJ IDEA Community EditionJetBrains/intellij-community

The open-source codebase for IntelliJ IDEA and the IntelliJ Platform, enabling IDE and plugin development.

swagger-codegenswagger-api/swagger-codegen

A template-driven engine to generate API clients, server stubs, and documentation from OpenAPI/Swagger definitions.

Bytecode ViewerKonloch/bytecode-viewer

A lightweight Java/Android reverse engineering suite with decompilers, disassemblers, and advanced analysis tools.

Cryptomatorcryptomator/cryptomator

A multi-platform desktop application that provides client-side encryption for cloud storage files, ensuring privacy and control.

Javaeclipse/vert.x

A toolkit for building reactive applications on the JVM with support for HTTP, TCP, and file system operations.

aws-cdkaws/aws-cdk

An open-source framework for defining AWS cloud infrastructure using familiar programming languages.

Trinotrinodb/trino

A fast distributed SQL query engine for big data analytics, enabling interactive queries across diverse data sources.

Debezium (k)debezium/debezium

A low-latency platform for change data capture (CDC) that streams row-level changes from databases to applications.

flywayflyway/flyway

Flyway is a database migration tool that simplifies and automates schema evolution across multiple database instances.

Pentaho Data Integration (.3k)pentaho/pentaho-kettle

An open-source ETL (Extract, Transform, Load) tool for data integration and migration.

JavaCVbytedeco/javacv

Java interface to OpenCV, FFmpeg, and other computer vision libraries with utility classes for easier Java/Android integration.

Extream Download Managersubhra74/xdm

A powerful download accelerator and video downloader that speeds up downloads up to 500% and saves videos from streaming sites.

MapStructmapstruct/mapstruct

A Java annotation processor for generating type-safe, high-performance bean mappers at compile time.

nanohttpdNanoHttpd/nanohttpd

A lightweight, embeddable HTTP server library for Java applications, packaged as a single Java file.

LeafMeituan-Dianping/Leaf

A high-performance distributed ID generation service offering segment and snowflake algorithms, used internally at Meituan-Dianping.

Hazelcasthazelcast/hazelcast

A unified real-time data platform combining stream processing with a fast data store for instant action on data-in-motion.

Gephigephi/gephi

An open-source platform for visualizing and manipulating large graphs and networks with real-time performance.

Apache Hudiapache/hudi

An open data lakehouse platform for incremental data processing with upserts, deletes, and time-travel queries.

google-java-formatgoogle/google-java-format

A tool that automatically reformats Java source code to comply with Google Java Style guidelines.

javaparserjavaparser/javaparser

A Java 1-25 parser and abstract syntax tree library with advanced analysis capabilities for source code manipulation.

Apache NiFi (k)apache/nifi

An easy-to-use, powerful, and reliable system to process and distribute data across cybersecurity, observability, and AI pipelines.

Bladelets-blade/blade

A lightweight, high-performance MVC web framework for Java 8 built on Netty, designed for simplicity and elegance.

DDD By Examples - Libraryddd-by-examples/library

A comprehensive Domain-Driven Design example project implementing a library system with strategic analysis and tactical patterns.

DDDSampleciterus/dddsample-core

A reference implementation of a cargo booking system demonstrating Domain-Driven Design (DDD) patterns and practices.

YCSBbrianfrankcooper/YCSB

A framework and common set of workloads for evaluating and comparing the performance of different NoSQL and cloud-serving databases.

MockServer (.8k)mock-server/mockserver

MockServer is an HTTP(S) mock server and proxy for mocking, recording, and debugging integrations with external systems.

FXGLAlmasB/FXGL

A JavaFX-based game development framework for building 2D games and complex UI applications with a clean, high-level API.

JavaCPPbytedeco/javacpp

A Java library providing efficient, zero-overhead access to native C++ code using JNI and annotations.

JDADV8FromTheWorld/JDA

A Java library for building Discord bots using the real-time gateway and REST API with event-driven architecture.

JDADV8FromTheWorld/JDA

A Java wrapper for the Discord API, enabling developers to create scalable and feature-rich Discord bots.

AWS SDK for Javaaws/aws-sdk-java

The official AWS SDK for Java 1.x enabling Java developers to work with Amazon Web Services (now in maintenance mode).

XChangeknowm/XChange

A Java library providing a consistent API for trading and accessing market data across 60+ cryptocurrency exchanges.