Browse free open source Java Frameworks and projects below. Use the toggles on the left to filter open source Java Frameworks by OS, license, language, programming language, and project status.

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    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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  • 1
    MMKV for Android

    MMKV for Android

    An efficient, small mobile key-value storage framework

    MMKV for Android is an efficient, small mobile key-value storage framework developed by WeChat. Works on Android, iOS, macOS, Windows, and POSIX. Efficient. MMKV uses mmap to keep memory synced with file, and protobuf to encode/decode values, making the most of Android to achieve best performance. MMKV supports concurrent read-read and read-write access between processes. Easy-to-use. You can use MMKV as you go. All changes are saved immediately, no sync, no apply calls needed. MMKV contains process locks, encode/decode helpers and mmap logics and nothing more. It's really tidy. MMKV adds about 50K per architecture on App size, and much less when zipped (apk). MMKV is published under the BSD 3-Clause license. Starting from v1.2.8, MMKV has been migrated to Maven Central. Older versions (<= v1.2.7) are still available on JCenter.
    Downloads: 2 This Week
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  • 2
    Spring Boot Demo

    Spring Boot Demo

    A project for in-depth study and practical application of Spring Boot

    This repository is a hands-on, “deep learning by doing” collection of Spring Boot demos that you can run and study module by module. It currently includes 66 planned integrations (with 55 completed) spanning monitoring, logging, templating, data access, caching, messaging, scheduling, search, security, and more. The master branch targets Spring Boot 2.1.0.RELEASE with a parent POM that centralizes common dependency versions; the older v-1.5.x branch is frozen and its contents are being migrated to master. Each demo ships with its own README and some require pre-initialized database data before launching. The project outlines a standard development environment (JDK 8+, Maven 3.5+, IntelliJ IDEA with Lombok, MySQL 5.7+) and simple run instructions—clone, open in IDEA, import Maven, and run the module’s Application class. It’s intended as a practical reference you can fork, explore, and extend.
    Downloads: 2 This Week
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  • 3
    Spring Cloud Kubernetes

    Spring Cloud Kubernetes

    Kubernetes integration with Spring Cloud Discovery Client

    Spring Cloud Kubernetes provides implementations of well known Spring Cloud interfaces allowing developers to build and run Spring Cloud applications on Kubernetes. While this project may be useful to you when building a cloud native application, it is also not a requirement in order to deploy a Spring Boot app on Kubernetes. If you are just getting started in your journey to running your Spring Boot app on Kubernetes you can accomplish a lot with nothing more than a basic Spring Boot app and Kubernetes itself. To learn more, you can get started by reading the Spring Boot reference documentation for deploying to Kubernetes and also working through the workshop material Spring and Kubernetes.
    Downloads: 2 This Week
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  • 4
    SpringAll

    SpringAll

    Step by step, learn Spring Boot, Spring Boot & Shiro, Spring Batch

    SpringAll is a comprehensive learning project that gathers a wide range of Spring, Spring Boot, and Spring Cloud demos in one repository. It is designed for developers who want to deepen their understanding of the Spring ecosystem by exploring concrete, runnable code samples. Each module focuses on a specific technology or integration—covering web applications, ORM frameworks, microservices, caching, messaging, security, distributed systems, and monitoring. The repository emphasizes both theory and practice, combining conceptual explanations with working examples so learners can bridge the gap between reading documentation and building real-world applications. It also includes advanced topics such as distributed locks with Zookeeper, API documentation with Swagger, session sharing, security with RBAC, and microservice communication patterns. The project continues to evolve with community contributions, making it a useful reference for both beginners and experienced Java developers.
    Downloads: 2 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

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  • 5
    Standard Webhooks

    Standard Webhooks

    The Standard Webhooks specification

    Standard Webhooks is a community-driven specification and set of open-source tools designed to make webhooks consistent, secure, and interoperable across providers. The project defines strict guidelines covering aspects like signature formats, headers, timestamps, replay protection, and forward compatibility. It includes reference implementations for signature verification and signing across multiple languages such as Python, JavaScript/TypeScript, Go, Rust, Ruby, PHP, C#, Java, and Elixir, along with additional community SDKs. The initiative is guided by a technical steering committee with members from companies like Zapier, Twilio, Mux, ngrok, Supabase, Svix, and Kong. Standard Webhooks matters because it eliminates the fragmentation of webhook implementations, reducing consumer effort and enabling seamless verification in apps or even directly in API gateways. By unifying best practices, it improves developer experience, enhances security, and enables new ecosystem tools.
    Downloads: 2 This Week
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  • 6
    The Apache Struts web framework

    The Apache Struts web framework

    Mirror of Apache Struts

    The Apache Struts web framework is a free open-source solution for creating Java web applications. Web applications differ from conventional websites in that web applications can create a dynamic response. Many websites deliver only static pages. A web application can interact with databases and business logic engines to customize a response. Web applications based on JavaServer Pages sometimes commingle database code, page design code, and control flow code. In practice, we find that unless these concerns are separated, larger applications become difficult to maintain. One way to separate concerns in a software application is to use a Model-View-Controller (MVC) architecture. The Model represents the business or database code, the View represents the page design code, and the Controller represents the navigational code. The Struts framework is designed to help developers create web applications that utilize an MVC architecture.
    Downloads: 2 This Week
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  • 7
    java-client

    java-client

    Java language binding for writing Appium Tests

    Java language binding for writing Appium Tests conforms to W3C WebDriver Protocol. Since version 8 Appium Java Client had several major changes, which might require to update your client code. Make sure to follow the v7 to v8 Migration Guide in order to streamline the migration process.
    Downloads: 2 This Week
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  • 8

    Eclipse and Java Video Tutorials

    Video tutorials for learning Java OOP programming with Eclipse.

    Free video screencam tutorials for Eclipse and Java. Includes "Eclipse and Java for Total Beginners", "Using the Eclipse Workbench", "Introducing Persistence", and "Using the Debugger". Intended for beginning and intermediate users and programmer. You can view the Total Beginners tutorials on Youtube at https://www.youtube.com/playlist?list=PLv6UtFrA7VEu4PtzJaGHHSeZBi6mdJtwv. You can read descriptions and download all of the tutorials at http://eclipsetutorial.sourceforge.net.
    Downloads: 8 This Week
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  • 9
    SIGAR (System Information Gatherer and Reporter) is a cross-platform, cross-language library and command-line tool for accessing operating system and hardware level information in Java, Perl and .NET.
    Downloads: 15 This Week
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  • Pioneering Intelligent GxP Manufacturing Icon
    Pioneering Intelligent GxP Manufacturing

    Life sciences manufacturers that need a GxP compliant solution to aggregate manufacturing data, contextualize it, and optimize their processes.

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  • 10
    Crystal Space 3D SDK
    Crystal Space is an Open Source 3D SDK for Unix, Windows, and MacOS/X. It renders with OpenGL and features GLSL shaders, CG shaders, deferred rendering, dynamic shadows, bullet based physics library, terrain engine, skeleton based animation meshes, exporter for Blender, portals, etc...
    Downloads: 7 This Week
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  • 11
    A real-time graph plotter. While your application is computing and logging results to a CSV file using the LiveGraph Writer API, the plotter lets you visualise and monitor the results live - by instantly plotting charts and graphs of the data.
    Downloads: 7 This Week
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  • 12
    ⚠️ PROJECT MOVED TO GITHUB ⚠️ Active development of ini4j has resumed on GitHub. Please visit https://github.com/ini4j/ini4j for the latest source code, issues, releases, and the upcoming v0.6.0 roadmap. (This SourceForge page is archived). Simple Java API Windows style .ini file handling. Also provide Java Preferences API functionality on top of .ini file.
    Downloads: 10 This Week
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  • 13
    Android Easy MultiDex

    Android Easy MultiDex

    Android, multidex, splitdex, subpackage plugin

    Android, multidex, splitdex, subpackage plugin. The Gradle script was integrated into the plug-in, so that only one configuration file needs to be maintained. Readers can choose separate configuration or integrated configuration according to their own needs. In this way, we maintain the number of methods of the main Dex at about 15,000, and we no longer have to worry about the number of methods. Through the above official subcontracting, the original Dex has been divided into 1 master Dex and more slave Dex. The main Dex contains all 4 major components, Application, Annotation, multidex, etc. and their necessary direct dependencies. Since the number of our methods has reached 16W, hundreds of activities were all stuffed into the main Dex, and the main Dex was successfully exploded.
    Downloads: 1 This Week
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  • 14
    BinNavi

    BinNavi

    BinNavi is a binary analysis IDE that allows to inspect, navigate, etc

    BinNavi is a binary analysis IDE - an environment that allows users to inspect, navigate, edit, and annotate control-flow-graphs of disassembled code, do the same for the callgraph of the executable, collect and combine execution traces, and generally keep track of analysis results among a group of analysts. BinNavi uses a commercial third-party graph visualisation library (yFiles) for displaying and laying out graphs. This library is immensely powerful, and not easily replaceable. In order to perform direct development using yFiles, you need a developer license for it. At the same time, we want the community to be able to contribute to BinNavi without needing a commercial yFiles license. In order to do this and conform to the yFiles license, all interfaces to yFiles need to be properly obfuscated.
    Downloads: 1 This Week
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  • 15
    Component

    Component

    A powerful componentized framework

    A powerful componentized framework. A powerful, 100% compatible, AndroidX, Kotlin support and flexible componentized framework. Component 2.x will all use Kotlin, and the annotation driver will be developed using ksp. The workload is huge. Therefore, the official 2.x version will have routine maintenance bugs in 1.9.x after a long time, please rest assured. Early adopters can use it 2.x, please use 1.9.x for stability. Choosing a better, more comprehensive, more stable and more promising framework is what your technical team or technical leader has to do! A powerful componentized framework that pays great attention to the user experience and brings you a different enjoyment in use. The whole design is close to the original, and there is very little invasion of the original code, and the original code is preserved as much as possible.
    Downloads: 1 This Week
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  • 16
    Dagger

    Dagger

    Fast dependency injector for Android and Java

    Dagger is a fully static, compile-time dependency injection framework for Java, Kotlin, and Android. It is an adaptation of an earlier version created by Square and now maintained by Google. The latest Dagger release is: Dagger 2.33. Dagger aims to address many of the development and performance issues that have plagued reflection-based solutions. Dagger is a replacement for the FactoryFactory classes that implements the dependency injection design pattern without the burden of writing the boilerplate. It allows you to focus on the interesting classes. Declare dependencies, specify how to satisfy them, and ship your app. Dependency injection frameworks have existed for years with a whole variety of APIs for configuring and injecting. So, why reinvent the wheel? Dagger 2 is the first to implement the full stack with generated code. The guiding principle is to generate code that mimics the code that a user might have hand-written to ensure that dependency injection is simple.
    Downloads: 1 This Week
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  • 17
    Deep Java Library (DJL)

    Deep Java Library (DJL)

    An engine-agnostic deep learning framework in Java

    Deep Java Library (DJL) is an open-source, high-level, engine-agnostic Java framework for deep learning. DJL is designed to be easy to get started with and simple to use for Java developers. DJL provides native Java development experience and functions like any other regular Java library. You don't have to be a machine learning/deep learning expert to get started. You can use your existing Java expertise as an on-ramp to learn and use machine learning and deep learning. You can use your favorite IDE to build, train, and deploy your models. DJL makes it easy to integrate these models with your Java applications. Because DJL is deep learning engine agnostic, you don't have to make a choice between engines when creating your projects. You can switch engines at any point. To ensure the best performance, DJL also provides automatic CPU/GPU choice based on hardware configuration.
    Downloads: 1 This Week
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  • 18
    Erupt Framework

    Erupt Framework

    Pure Java annotation, single class file, rapid development

    Pure Java annotation, single class file, rapid development of Admin management background. Does not generate any code, zero front-end code, zero CURD, automatic table creation, annotated API, custom service logic, supports all mainstream databases, supports custom pages, supports multiple data sources, provides more than 20 types of business components, more than a dozen It supports logical deletion, dynamic timing tasks, front-end and back-end separation, etc. Core technologies: Spring Boot, JPA, Reflect, TypeScript, NG-ZORRO, etc. Erupt is a low-code full-stack class framework that uses Java annotations to dynamically generate pages and background functions such as adding, deleting, modifying, checking, and permission control. Zero front-end code, zero CURD, automatic table creation, only one class file + simple annotation configuration, quickly develop enterprise-level Admin management background.
    Downloads: 1 This Week
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  • 19
    Framework Benchmarks

    Framework Benchmarks

    Source for the TechEmpower Framework Benchmarks project

    If you're new to the project, welcome! Please feel free to ask questions here. We encourage new frameworks and contributors to ask questions. We're here to help! This project provides representative performance measures across a wide field of web application frameworks. With much help from the community, coverage is quite broad and we are happy to broaden it further with contributions. The project presently includes frameworks on many languages including Go, Python, Java, Ruby, PHP, C#, F#,Clojure, Groovy, Dart, JavaScript, Erlang, Haskell, Scala, Perl, Lua, C, and others. The current tests exercise plaintext responses, JSON serialization, database reads and writes via the object-relational mapper (ORM), collections, sorting, server-side templates, and XSS counter-measures. Future tests will exercise other components and greater computation.
    Downloads: 1 This Week
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  • 20
    Galen Framework

    Galen Framework

    Layout and functional testing framework for websites

    Automated testing of the look and feel of your responsive websites. Layout testing seemed always a complex task. Galen Framework offers a simple solution: test the location of objects relative to each other on the page. Using a special syntax and comprehensive rules you can describe any layout you can imagine. Galen Framework runs well in Selenium Grid. You can set up your tests to run in a cloud-like HeadSpin, LambdaTest, Sauce Labs, or BrowserStack so that you can even test your responsive websites on different mobile devices. Galen can run multiple tests in parallel which is also a nice time saver. Galen Framework is designed with responsiveness in mind. It is easy to set up a test for different browser sizes. Galen just opens a browser, resizes it to a defined size, and then tests the page according to specifications.
    Downloads: 1 This Week
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  • 21
    JVM Sandbox

    JVM Sandbox

    Real-time non-invasive AOP framework container based on JVM

    JVM sandbox container, a JVM non-invasive runtime AOP solution. Real-time non-invasive AOP framework container based on JVM. Dynamically enhance the class you specify, get the parameters and line information you want, and even change the method execution. JVM-SANDBOX (sandbox) implements an AOP solution that does not restart or invade the target JVM application. Static knitting occurs when the bytecode is generated, and the AOP bytecode is inserted into the target class and method in advance according to the rules of a certain framework to realize AOP. Dynamic knitting allows the AOP bytecode enhancement of the specified method to be completed during the JVM operation. Most common dynamic knitting schemes use renaming the original method, and then create a new method with the same signature to do the proxy work mode to complete The function of AOP (common implementation scheme such as CgLib), but there are some application boundaries in this way.
    Downloads: 1 This Week
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  • 22

    Material Components for Android

    Modular and customizable Material Design UI components for Android

    Material Components for Android delivers Material Design’s popular and reliable design and development resources to Android developers. With Material Design’s modular and customizable UI components, Android developers can create beautiful, high quality products faster and easier. Developed by a core team of engineers and UX designers at Google, Material Components enable developers to achieve a more reliable development workflow for building exceptional and highly functional apps. Material Components for Android is a drop-in replacement for Android's Design Support Library, offering tried and trusted Material Design guidelines and components.
    Downloads: 1 This Week
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  • 23
    MyBatis

    MyBatis

    MyBatis SQL mapper framework for Java

    MyBatis is a first class persistence framework with support for custom SQL, stored procedures and advanced mappings. MyBatis eliminates almost all of the JDBC code and manual setting of parameters and retrieval of results. MyBatis can use simple XML or Annotations for configuration and map primitives, Map interfaces and Java POJOs (Plain Old Java Objects) to database records. Every MyBatis application centers around an instance of SqlSessionFactory. A SqlSessionFactory instance can be acquired by using the SqlSessionFactoryBuilder. SqlSessionFactoryBuilder can build a SqlSessionFactory instance from an XML configuration file, or from a custom prepared instance of the Configuration class. Building a SqlSessionFactory instance from an XML file is very simple. It is recommended that you use a classpath resource for this configuration, but you could use any InputStream instance, including one created from a literal file path or a file:// URL.
    Downloads: 1 This Week
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  • 24
    RIBs

    RIBs

    Uber's cross-platform mobile architecture framework

    RIBs is the cross-platform architecture framework behind many mobile apps at Uber. The name RIBs is short for Router, Interactor and Builder, which are core components of this architecture. This framework is designed for mobile apps with a large number of engineers and nested states. Shared architecture across iOS and Android. Build cross-platform apps that have similar architecture, enabling iOS and Android teams to cross-review business logic code. Testability and Isolation. Classes must be easy to unit test and reason about in isolation. Individual RIB classes have distinct responsibilities like routing, business, view logic, creation. Plus, most RIB logic is decoupled from child RIB logic. This makes RIB classes easy to test and reason about independently. Tooling for developer productivity. RIBs come with IDE tooling around code generation, memory leak detection, static analysis and runtime integrations.
    Downloads: 1 This Week
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  • 25
    Simple Binary Encoding (SBE)

    Simple Binary Encoding (SBE)

    Simple Binary Encoding (SBE) - High Performance Message Codec

    SBE is an OSI layer 6 presentation for encoding and decoding binary application messages for low-latency financial applications. This repository contains the reference implementations in Java, C++, Golang, C#, and Rust. More details on the design and usage of SBE can be found on the Wiki. An XSD for SBE specs can be found here. Please address questions about the specification to the SBE FIX community. For the latest version information and changes see the Change Log with downloads at Maven Central. The Java and C++ SBE implementations work very efficiently with the Aeron messaging system for low-latency and high-throughput communications. The Java SBE implementation has a dependency on Agrona for its buffer implementations.
    Downloads: 1 This Week
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