Learn System Design concepts and prepare for interviews using free resources.
Design patterns implemented in Java
[MAINTENANCE MODE] Modular and customizable Material Design UI components for Android
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
Resilience4j is a fault tolerance library designed for Java8 and functional programming
Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS
A full-featured package manager and viewer for Android
Digital logic design tool and simulator
A digital logic designer and circuit simulator.
signal-cli provides an unofficial commandline, JSON-RPC and dbus interface for the Signal messenger.
esProc SPL is a JVM-based programming language designed for structured data computation, serving as both a data analysis tool and an embedded computing engine.
FlatLaf - Swing Look and Feel (with Darcula/IntelliJ themes support)
Lightweight, fast, stable, programmable component-based rule engine — where AI Agents orchestrate just like ordinary components. Uniquely designed DSL: component reuse, sync/async & dynamic orchestration, multi-language scripting, nested rules, hot deployment and smooth refresh. If you can orchestrate LiteFlow, you can orchestrate AI.
Java开发及面试(个人面试、工作总结、资料收集站)
Framework for Evolutionary Message-Driven Microservices on the JVM
[CASUALLY MAINTAINED] 轻小说文库 (Wenku8.com) 安卓版第三方公益App,始于2014年的初版Material Design风格、非盈利、Play Store上安装包最小的轻小说阅读器 (light novel reader)。目前网站的API由于被大量滥用,已更新成我自己架的 Cloudflare Worker API 中继节点,不然的话网站关闭API就全军覆没了。
Open-source, ad-free Android multimedia recorder with background video recording, screen recording, live streaming, and remote camera control
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".
Android open source calendar
Purpur is a drop-in replacement for Paper servers designed for configurability, and new fun and exciting gameplay features.
💬 DialogX dialog box component library, easy to use, more customizable, more scalable, easy to achieve a variety of dialog boxes. DialogX对话框组件库,更加方便易用,可自定义程度更高,扩展性更强,轻松实现各种对话框、菜单和提示效果,更有Material You、iOS、MIUI等主题扩展可选
iText for Java represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enhance PDF documents, iText can be a boon to nearly every workflow.
A Minecraft mod designed to improve the general performance of the game, without compromising functionality or mod compatibility
🔥Almost最佳后端规范🔥页面现代美观,且专注设计与代码细节的高质量多租户中后台管理系统框架。开箱即用,持续迭代优化,持续提供舒适的开发体验。当前采用技术栈:SpringBoot v3.4.x (Java17)、Vue3 & ArcoDesign、TS、Vite5 、SaToken、MyBatisPlus、Redisson、FastExcel、CosId、JetCache、JustAuth、Crane4j、SpringDoc、Hutool 等。
Advanced PCB auto-router
KeyStore Explorer is a free GUI replacement for the Java command-line utilities keytool and jarsigner.
🚀 LangGraph for Java is a library for Graph Engineering, designed to build sophisticated AI agentic architectures within the Java ecosystem. It works seamlessly with both Langchain4j and Spring AI.
A distributed single-sign-on framework.(单点登录框架XXL-SSO)
Dromara MaxKey 🗝️ SSO ,Leading-Edge IAM-IDaas(Identity and Access Management) Product , Under Apache-2.0 is free ,业界领先的IAM-IDaas身份管理和认证产品,遵循Apache-2.0开源免费,支持OAuth2.x、OpenID Connect、SAML2.0、CAS、JWT、SCIM等SSO标准协议,基于RBAC统一权限控制,实现用户生命周期管理,开源、安全、合规、自主可控。
Spoon is a metaprogramming library to analyze and transform Java source code. :spoon: is made with :heart:, :beers: and :sparkles:. It parses source files to build a well-designed AST with powerful analysis and transformation API.
Medium Unlocker (now Freedium App) is an android app designed to access Medium, NYT, Bloomberg, Washington Post, Financial Times, Reuters, The Economist articles without any paywalls.
The open source Solver AI for Java and Kotlin to optimize scheduling and routing. Solve the vehicle routing problem, employee rostering, task assignment, maintenance scheduling and other planning problems.
PolarDB-X is a cloud native distributed SQL Database designed for high concurrency, massive storage, complex querying scenarios.
🔖 It's a material-design about screen to use on your Android apps. A developer profile and application information easy to integrate.
An open source and lightweight music client for Subsonic, designed and built natively for Android.
Source code of APK Explorer & Editor (AEE), an open-source tool to explore the contents of an installed APK!
A set of utilities designed for incremental building, merging and optimization of data transformations.
Customizable, privacy‑first, open-source clock app inspired by AOSP Clock
Digital Signature Service : creation, extension and validation of advanced electronic signatures
PacketEvents is a protocol library tailored to Minecraft Java Edition, designed to facilitate the processing and transmission of packets.
Use Apache Causeway™ to rapidly develop domain-driven apps or modular monoliths in Java, on top of the Spring Boot platform. Write your business logic in entities, domain services or view models, and the framework dynamically generates a representation of that domain model as a webapp, GraphQL or RESTful API. For prototyping or production.
OpenAM is an open-source access management solution for identity authentication, authorization, and federation. It provides single sign-on, adaptive authentication, and centralized policy control, enabling secure access to web, mobile, and cloud applications
SymmetricDS is database replication and file synchronization software that is platform independent, web enabled, and database agnostic. It is designed to make bi-directional data replication fast, easy, and resilient. It scales to a large number of nodes and works in near real-time across WAN and LAN networks.
JavaLite is a cohesive collection of frameworks designed from ground up to add pleasure back to your daily life
OWASP Benchmark is a test suite designed to verify the speed and accuracy of software vulnerability detection tools. A fully runnable web app written in Java, it supports analysis by Static (SAST), Dynamic (DAST), and Runtime (IAST) tools that support Java. The idea is that since it is fully runnable and all the vulnerabilities are actually exploitable, it’s a fair test for any kind of vulnerability detection tool. For more details on this project, please see the OWASP Benchmark Project home page.
ATTENTION: This repository is a clone of https://gitlab.structr.com/structr/structr. All development/issue tracking has moved there. | Structr is an integrated open-source low-code development and runtime environment that uses a graph database (Neo4j).
A Fabric mod designed to improve the chunk performance of Minecraft.
💖Snowy是一款国内首个国密前后分离快速开发平台,采用Vue3+AntDesignVue3 + Vite+SpringBoot+Mp+HuTool+SaToken。集成国密加解密插件,在前后分离框架中,真正做到:前后分离“密”不可分;同时实现国产化机型、中间件、数据库适配,是您的不二之选;最后官网提供工作流、多租户、多数据源、Vue3表单设计器等丰富插件灵活使用。
Apache BifroMQ (Incubating) is a high-performance, distributed MQTT broker that natively supports multi-tenancy. It is designed to enable the building of large-scale IoT device connectivity and messaging systems.
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
Node-based data application for visualization and generative design
Public production-ready obfuscator using the MapleIR framework designed by cts
摸鱼低代码平台,是一款致力于让开发像摸鱼一样轻松的低代码/无代码平台。首创微服务单体服务一体化架构。基于SpringBoot4、Spring Ai、Vue3等最新前后端技术栈。已用于多个成熟项目,学习和实战两不误。我们希望打破技术门槛,让程序员和非程序员都能快速构建业务系统,提升效率,释放创造力。
JTokkit is a Java tokenizer library designed for use with OpenAI models.
Nop Platform 2.0 is a next-generation low-code development platform built from scratch based on the principles of reversible computation, adopting a language-oriented programming paradigm. It includes a suite of fully designed engines such as a GraphQL engine, ORM engine, workflow engine, reporting engine, rule engine, and batch processing engine,
Skyeye云零代码,采用Springboot + UNI-APP + Ant Design Vue的框架的快速开发平台。包含50多种电子流程,CRM、PM、ERP、MES、ADM、OA、EHR、AI、项目、商城、财务、多班次考勤、薪资、招聘、云售后、论坛、问卷、报表设计、工作流、Saas等功能。打造全网首套零代码、功能最全、价格最优惠的智能制造行业供应链一体化管理软件。
Java全栈工程师学习笔记;Spring、shiro、CAS、oauth2单点登录;cache 、Redis; web 安全及解决思路;redis、mq、quartz、docker;Docker各种组件实践等;mybatis、spring、spring boot实践;分布式锁;基于分库分表等等;Java full-stack engineer study notes; Spring, shiro, CAS, oauth2 single sign-on; cache, Redis; web security and solutions; redis, mq, quartz, docker; Docker various component practices, etc.;
🔐 Tutorial of setting up Security for your API with one way authentication with TLS/SSL and mutual authentication for a java based web server and a client with both Spring Boot. Different clients are provided such as Apache HttpClient, OkHttp, Spring RestTemplate, Spring WebFlux WebClient Jetty and Netty, the old and the new JDK HttpClient, the old and the new Jersey Client, Google HttpClient, Unirest, Retrofit, Feign, Methanol, vertx, Scala client Finagle, Featherbed, Dispatch Reboot, AsyncHttpClient, Sttp, Akka, Requests Scala, Http4s Blaze, Kotlin client Fuel, http4k, Kohttp and ktor. Also other server examples are available such as jersey with grizzly. Also gRPC, WebSocket and ElasticSearch examples are included
A launcher designed for Minecraft Bedrock Edition on Android