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.

  • Easily Host LLMs and Web Apps on Cloud Run Icon
    Easily Host LLMs and Web Apps on Cloud Run

    Run everything from popular models with on-demand NVIDIA L4 GPUs to web apps without infrastructure management.

    Run frontend and backend services, batch jobs, host LLMs, and queue processing workloads without the need to manage infrastructure. Cloud Run gives you on-demand GPU access for hosting LLMs and running real-time AI—with 5-second cold starts and automatic scale-to-zero so you only pay for actual usage. New customers get $300 in free credit to start.
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  • Run Any Workload on Compute Engine VMs Icon
    Run Any Workload on Compute Engine VMs

    From dev environments to AI training, choose preset or custom VMs with 1–96 vCPUs and industry-leading 99.95% uptime SLA.

    Compute Engine delivers high-performance virtual machines for web apps, databases, containers, and AI workloads. Choose from general-purpose, compute-optimized, or GPU/TPU-accelerated machine types—or build custom VMs to match your exact specs. With live migration and automatic failover, your workloads stay online. New customers get $300 in free credits.
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  • 1
    jsRails is a JavaScript port of Ruby on Rails frameworks. It uses J2EE technology as the backend, integrating Spring, Hibernate and Tomcat to provide core functionality for developers. And uses the fast and mature js interpreter Rhino as the js engine.
    Downloads: 0 This Week
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  • 2
    jsf-showcase

    jsf-showcase

    JavaServer Faces (JSF) v.2.2.x showcase, portable web-application.

    JavaServer Faces (JSF) v.2.2.x web-framework showcase. Portable web-application for Java WEB-developers, who use Java Server Faces. Made for convenience - if Internet access suddenly down ). See please excellent projects: https://github.com/liferay/liferay-faces-showcase/ and https://github.com/heroku/webapp-runner/ , also https://mvnrepository.com/search?q=webapp-runner and https://mvnrepository.com/search?q=com.liferay.faces.demo .
    Downloads: 0 This Week
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  • 3
    jsimple.org

    jsimple.org

    Rapid Development Framework Based on the Java EE platform and Swing

    In a general way, we can define a jSimple as a piece of software that automatically connects persistent data (Entities) with the user interface (visual objects). We use the word "connect" because it implements all the logic that is needed to display persistent data and to make the user input persistent, creating or modifying data. The main benefit of using a jSimple is that it simplifies database applications development, because it takes care of all the technical aspects involved in moving data from the persistent to the presentation tier and vice versa, saving big amounts of code and lots of headaches.
    Downloads: 0 This Week
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  • 4
    Java Modular SOA and SAAS Framework for Enterprise Class Application
    Downloads: 0 This Week
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  • Build on Google Cloud with $300 in Free Credit Icon
    Build on Google Cloud with $300 in Free Credit

    New to Google Cloud? Get $300 in free credit to explore Compute Engine, BigQuery, Cloud Run, Vertex AI, and 150+ other products.

    Start your next project with $300 in free Google Cloud credit. Spin up VMs, run containers, query exabytes in BigQuery, or build AI apps with Vertex AI and Gemini. Once your credits are used, keep building with 20+ products with free monthly usage, including Compute Engine, Cloud Storage, GKE, and Cloud Run functions. Sign up to start building right away.
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  • 5
    A menu management and rendering system for Java based web applications
    Downloads: 0 This Week
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  • 6

    jsprad

    jsp framework to optimize time for develop

    Optimize jsp develop with a library thats generate HTML code y javascript. Support Database with pools, AJAX, Jquery, generate tables, fields and images with this framework. Videos tutoriales español youtube : 1. Controles bàsicos http://youtu.be/SgcgYAY9nI8 2. Controles basicos 2 , validaciones http://youtu.be/53fBBl2MOH4
    Downloads: 0 This Week
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  • 7
    JStatCom is a software framework that facilitates the creation of JAVA programs for data based analysis tasks in various domains. It provides ways to call routines from specialized software packages, like Matlab, Gauss, Ox, and possibly others.
    Downloads: 0 This Week
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  • 8
    Java-based package for the development and maintenance of GUI database applications.
    Downloads: 0 This Week
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  • 9
    Java Test Framework is another scripting environment, but with a Swing GUI (possible Swing Application Framework), version control on configuration files, profiling on the run, database storage and statistical processing on the results.
    Downloads: 0 This Week
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  • Enterprise-grade ITSM, for every business Icon
    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.
    Try it Free
  • 10
    Unsigned and signed 8,16, and 32-bit integers in java.
    Downloads: 0 This Week
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  • 11
    A powerful but lightweight configuration-, dependency-injection-, and scripting framework for the JVM, leveraging a combination of annotations and the standard Java script engine framework to provide self-validating scriptable configuration files
    Downloads: 0 This Week
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  • 12
    jwaBlogger is social links/blogging software, that can easily be added to your website. jwaBlogger provides full HTML support, RSS and Atom feeds, a most popular blog entry history, and more. Example at: http://www.jwablogger.org.
    Downloads: 0 This Week
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  • 13
    jwadlib WAD Library is a Java library for manipulating WAD files, the format made popular by Doom.
    Downloads: 0 This Week
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  • 14
    A simple, yet powerful wizard framework for Java and Swing with a look and feel similar to the JFace wizard API.
    Downloads: 0 This Week
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  • 15
    JWS is a free service-oriented framework designed to build distributed applications. It is based on J2EE.
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  • 16
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  • 17
    jZeno is a full-stack java web application framework that offers the ability to develop rich web applications. The main architectural goal of jZeno is to allow people to create web applications using pure java development as much as possible.
    Downloads: 0 This Week
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  • 18
    Java API for GSM modems. Allows sending and receiving SMS. Capable to dial out and receive calls in data mode. Contains driver classes for Wavecom and Siemens GSM modems. Extandable. Developers are welcome to supply new drivers.
    Downloads: 0 This Week
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  • 19
    krest

    krest

    A Java Framework for the creation of online REST services

    A Java framework for the creation of REST services. Krest is built upon Spring MVC and offers an enterprise scale solution for REST services. Please visit http://javakrest.sourceforge.net/ to find the demo app, or download the core library.
    Downloads: 0 This Week
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  • 20
    Framework for MVC applications.
    Downloads: 0 This Week
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  • 21
    Allows Java applications to output to text console and emulated console. Provides both a JCurses based implementation and an emulated console using Swing.
    Downloads: 0 This Week
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  • 22
    libabk

    libabk

    Ana de Breuil Java Kit: un framework agnóstico para programar en Java

    Downloads: 0 This Week
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  • 23
    lightweb -- light weight web framework A very simple and fast web framework with a DispatchServlet, an Action interface, and a Config Reading part. maps one url -> one action instance. lightweb is very suitable for Template Tech like Velocity, fastm.
    Downloads: 0 This Week
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  • 24
    Java lightweight database abstraction layer,built on jdbc to provide ease of use database access. Consentrate on implementing logic without having to think about opening /closing connections,manage connection pools etc which is handled behind the scenes.
    Downloads: 0 This Week
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  • 25

    log4j-gwt

    log4j-gwt enables GWT clients to use log4j

    log4j-gwt enables GWT clients to make use of the log4j Logger, and benefit from log4j's flexibility and convenient methods. Using log4j-gwt, logged messages are routed to GWT's internal logging API.
    Downloads: 0 This Week
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