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.

  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

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  • 1
    Cubicle is a framework / application server based on the infamous Spring framework and works with a component approach. To make application developement easier, Cubicle provides a pluggable application mechanism, provides common features (user management
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  • 2
    Cuckoo is an Ajax Framework based on Echo2 and exclusively for J2EE applications.
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  • 3
    Cuckoo Resource Adapter for SAP

    Cuckoo Resource Adapter for SAP

    JCA compatible Resource Adapter for SAP

    Cuckoo is an open source Resource Adapter for SAP that is compatible to the Java Connector Architecture (JCA) version 1.5. It enables developers of Java EE applications to call functions in a SAP backend, making use of Java EE features like Container Managed Transactions and Security.
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  • 4
    The Customizable Caching Framework provides a basic but robust implementation of a cache with expiry and memory management features. It also provides entry points to populate the cache, making it reusable in several applications.
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  • Go from Code to Production URL in Seconds Icon
    Go from Code to Production URL in Seconds

    Cloud Run deploys apps in any language instantly. Scales to zero. Pay only when code runs.

    Skip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
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  • 5
    Cuttle is a flexible MVC framework. You can assemble partial page and action method by configure. It can integrate with spring, and supports AJAX directly.
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  • 6
    A service-oriented, cross-platform application framework (v1 was implemented in .net, current codebase is in Java), which is trageted to speed up and standartise development by providing a robust freely extensible component structure.
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  • 7
    Cyberinfrastructure Shell (CIShell) is an open source, community-driven framework/application for the integration and utilization of datasets, algorithms, tools, and computing resources. Algorithms can be integrated using most programming languages.
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  • 8
    D-Cog (Declarative-Cognition) is a Java based framework for training software components (reusable, object-oriented, interface-driven components). Instead of programmed, software components are trained by example to get the expected results.
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  • 9
    You can execute your computationally intensive applications on various machines simultaneously. You can command multiple computers from a single site and more. This is a Grid middleware and a remote administrator also.
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  • 99.99% Uptime for MySQL and PostgreSQL Databases Icon
    99.99% Uptime for MySQL and PostgreSQL Databases

    Sub-second maintenance. 2x read/write performance. Built-in vector search for AI apps.

    Cloud SQL Enterprise Plus delivers near-zero downtime with 35 days of point-in-time recovery. Supports MySQL, PostgreSQL, and SQL Server.
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  • 10
    DBCache is a tool/framework set that creates java classes from a Database schema, and allows you to start with the logic of your application. It uses a cache to reduce DB overload and facilitates DB access. It'll save you a lot of time.
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  • 11
    DDDplus

    DDDplus

    A lightweight flexible development framework

    DDDplus, originally cp-ddd-framework(cp means Central Platform, lightweight flexible development framework for complex business architecture. A set of lightweight business mid-stage development framework, based on DDD thinking, is committed to the precipitation and inheritance of business assets, comprehensively solves the expansion problem of complex business scenarios, realizes the core elements of mid-stage, and empowers mid-stage construction. Integrating the complex ecological collaboration methodology of the front-end, and middle-end, and fully considering the organizational structure, technical debt, learning threshold, evolution, operation and maintenance costs and risks, it is developed to solve the pain points of business development. It is the top-level design and complete solution of the middle-end architecture.
    Downloads: 0 This Week
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  • 12
    Dependency Injection framework for Java3D using Spring. The goal is to provide fast, easy examples of setting up Java3D with Spring.
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  • 13
    DIProxy is integrated some DIContainer. And DIProxy reject relation between WebFramework and DIContainer. added DIProxy is implemented Dynamic injection. see at http://diproxy.wiki.sourceforge.net/
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  • 14
    DQGen is a framework to generate dynamic sql queries in an optimized manner on top of Java Database Connectivity (JDBC)
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  • 15
    Metaprogramming: proof of the concept.
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  • 16
    DSL Runner is a framework that provides a easy way to create and run simple DSLs (Domain Specific Language) on Java Virtual Machine.
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  • 17
    Rather than a single project, Dalinium is a group of multiple Open Source projects which aim to offer a set of frameworks to other developers.
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  • 18
    A .Net Library that lets you make full use of multi-core and multiprocessor computers. It is very efficient, and easily integrated into existing applications. It is modeled after the Parallel FX usage model, and is faster than the PFX too.
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  • 19
    Daozero reduces DAO code based on Spring & iBatis. The Old way is to write code and invoke iBatis API explicitly, but Dao-zero implements DAO interfaces in runtime, invokes iBatis API for developers automatically. Replace old DAOs with it directly.
    Downloads: 0 This Week
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  • 20
    An extensible framework to provide data adaptation services in distributed systems and ETL applications. Used to preprocess (non-XML) data into XML, transform and validate XML data and write it to a sink interface. Also includes simple XML tools.
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  • 21
    This toolkit facilitates easier connections between stored data, intermediate data, and data presented to users in Java applications. The classes are abstracted as much as possible to allow wide use for various types of programs.
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  • 22
    Data Matrix

    Data Matrix

    Java Api to manipulate simple on data of Matrix Type

    Java Api to manipulate simple on data of Matrix Type. There is lot of usefull methods like resize, insert , remove, sort and lot of other methods. Usefull methods to manipulate with diagonals. For example you can create block diagonal matrix. There is lot of usefull methods to manipulate on mathematic matrix also, like determinant , norm , minor , cofactor , solveLienarSystem , arithmetic operations also and lot more.
    Downloads: 0 This Week
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  • 23
    A front end shell around data objects designed to facilitate rich access to objects written in any programming language from applications written in any other programming language.
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  • 24
    DataBase to Java Web Application. This java application automatically generates a java web application framework from an existing database. The original codebase comes from the excellent work of Herve Tchepannou\'s xPetstore.
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  • 25
    The concept behind DataWoo is to create a Spring-based architecture that allows developers to jump-start their coding efforts by providing a hardened and secure foundation when developing new systems; it can also be used as a reference for incorporating new technologies into existing systems. DataWoo is meant to be a research and development platform that can be extended into just about any enterprise-level web application. The architecture will be developed in three phases: 1. Basic Spring Architecture: Provides all the basic components needed to field an enterprise-level application. 2. Programmatic Security Model: Incorporates the components needed to dynamically assign users to user roles and user roles to profiles. 3. Meta-Driven Architecture: Use meta-data to dynamically configure 80%-90% of the application using the concepts exemplified in the Compiere open source project.
    Downloads: 0 This Week
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