Best Java Tools & Libraries

spring-boot

github

Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

spring-framework

github

Spring Framework

dbeaver

github

Free universal database tool and SQL client

JeecgBoot

github

一款 AI 驱动的低代码平台，提供"零代码"与"代码生成"双模式——零代码模式一句话搭建系统，代码生成模式自动输出前后端代码与建表 SQL，生成即可运行。平台内置 AI 聊天助手、AI大模型、知识库、AI流程编排、MCP 与插件体系，兼容主流大模型，支持一句话生成流程图、设计表单、聊天式业务操作，解决 Java 项目 80% 重复工作，高效且不失灵活。

dubbo

github

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

kestra

github

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Chat2DB

github

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

jenkins

github

Jenkins automation server

libgdx

github

Desktop/Android/HTML5/iOS Java game development framework

shardingsphere

github

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

DoKit

github

一款面向泛前端产品研发全生命周期的效率平台。

cat

github

CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。

tech-interview-for-developer

github

👶🏻 신입 개발자 전공 지식 & 기술 면접 백과사전 📖

questdb

github

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

neo4j

github

Graphs for Everyone

mockito

github

Most popular Mocking framework for unit tests written in Java

doris

github

Apache Doris is an easy-to-use, high performance and unified analytics database.

zaproxy

github

The ZAP by Checkmarx Core project

cryptomator

github

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

onedev

github

Git Server with CI/CD, Kanban, and Packages. Seamless integration. Unparalleled experience.

pinpoint

github

APM, (Application Performance Management) tool for large-scale distributed systems.

tink

github

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

floci

github

Light, fluffy, and always free - The AWS Local Emulator alternative

metersphere

github

MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。