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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
    Sign up for free
  • 1
    CloudTest-Cloud java unit test framework

    CloudTest-Cloud java unit test framework

    A redefined framework with new approach and methodology for unit test

    CloudTest is a redefined unit testing approach and methodology, which can make your testing jobs become much more easy and efficient. It is a pure java lightweight framework integrated test cases management, test data management, assert management, automation regression, performance monitor and test report in one.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Clown is a "clustering" framework. It allows you to cluster datasets (in ARFF) format using a number of different clustering algorithms.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    Clutch is a Java framework for distributed computing using mobile agents. Built using ProActive [http://www-sop.inria.fr/sloop/javall/], it is meant to be a scalable toolkit that can be used to distribute computation across an arbitrary number of nodes.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    CoDeK - Java Concurrent Development frameworK is a very simple, open-source, academic java library aimed to help the development of Java multi-threading concurrent applications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 5

    CoSimA+

    The Co-Simulation Adaptation Platform

    The co-simulation adapation platform serves as programming framework and middleware to enable coupling of distributed, heterogeneous numerical models. The framework facilitates the adaptation and integration of new sub-models into a common simulation platform.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    The management of static code is a universal issue for every enterprise applications, this framework tries to address it with a lightweight and simple solution.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    The CodeTime platform covers every aspect of parallel software from authoring, through distribution, to run-time. Its goals are: high programmer productivity; write once, run high performance anywhere; and wide acceptance.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    A flexible code generation framework providing the infrastructure for developers to build their own code generators.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    This framework provides the easiest way to build cross platform installers based on Java technologies. Due to its extensible architecture, it can be easily adjusted to fit your needs and allows nice UI interfaces implemented with Groovy or JavaFX.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11

    Coherent Logic FRED Client

    Java client API for accessing the FRED web services

    ***** WARNING ***** The delivery of the 1.0.3-RELEASE of this framework will be the final source code commit that will be made on SourceForge; all further updates can be found at the following address: https://bitbucket.org/CoherentLogic/coherent-logic-fred-client/ ***** WARNING ***** The FRED Client is a Java-based internal domain-specific language (DSL) for accessing the Federal Reserve Economic Data (FRED) web services complements of the Federal Reserve Bank of St. Louis. The API is designed to work with The Spring Framework and includes several examples to demonstrate how the components fit together. The domain model includes Java Persistence Annotations (JPA) for projects with requirements to persist FRED data in a database. Also included with this API are data access objects to facilitate various persistence operations.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Coherent Nucleus is a Java classloader implementation which is used to build executable jar files which contain other jar files that need to be included in the application's classpath via the manifest file's Class-Path attribute.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Coherent MK is a Java based microkernel framework.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    The Collaborative Editing Framework for XML (CEFX) is a software framework that targets developers who want to either extend an existing or create new XML collaborative real-time editing software easily.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Combean is a Java framework for mathematical structures and optimization algorithms. Through a set of Java interfaces and JavaBeans-based config, Combean glues optimization codes together - leading to more interoperable, adaptable and flexible solutions.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Component (library, framework) refactoring may affect existing applications, where the client code used previous component versions. Our tool preserves applications binary-compatible by generating an adaptation layer out of change history.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    This project provides a highly adaptive and easy to use command line option parser for Java applications. Apache CLI Command Line Parser was not satisfiable, so this API was intended to be more "complete" and easier to use than other known libraries.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Collection of common and utilitarian code for mobile application (J2ME) developers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    This is a community based open source. These are api sets which can be used for any community applications
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    An open-source implementation of a self-contained Java-based component model called CompUnit. CompUnit introduces users to the software component lifecycle without requiring proprietary technology or being dependent upon a number of external projects.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Developed in KBQuest Ltd, Compass framework is an architectural pattern for web application. It provides guidelines for developers to avoid misuse of frameworks.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    JavaSever Faces. The ComplexDataTable component JSF component that extends the datatable component. It provides additional feature such as: · A sorting mechanism (Sorting works on any data type) · In-line edit · In-line delete · Add record · Scrolla
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    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: 0 This Week
    Last Update:
    See Project
  • 24
    Components is a very fast and easy java web framework. The main features are: very strict separation between presentation and controller layers (no more JSP!), ease of use, very fast page rendering, zero-configuration paradigm.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Comtor commons libs, includes: Logs, Exception handling, number printing, configuration files handling, TCP/UDP Server skel.
    Downloads: 0 This Week
    Last Update:
    See Project