Open Source Groovy Frameworks

ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.

Grails is an open‑source, full‑stack web application framework built on the Groovy language and the Java platform. It emphasizes “coding by convention” to streamline development by reducing configuration, leveraging Spring Boot, Hibernate, and integrated DSLs for rapid productivity. Supports expressive DSLs for validation, querying, and view rendering. High‑productivity web framework adopting “coding by convention” paradigm. Rich IDE support across IntelliJ IDEA, Eclipse, Sublime, and NetBeans. Asynchronous and reactive programming support via Promises and RxJava.

Development of this library has been moved to https://github.com/kordamp/json-lib/ Json-lib is a java library for transforming beans, maps, collections, java arrays and XML to JSON and back again to beans and DynaBeans. It is based on the work by Douglas Crockford in http://www.json.org/java.

JPPF makes it easy to parallelize computationally intensive tasks and execute them on a Grid.

Tinker_imitator is an open source imitation/practice implementation of WeChat’s “Tinker” Android hot-update (hotfix) mechanism. It demonstrates how to update dex, resources, and native libraries without reinstalling the APK, aiming to simulate how WeChat patches apps in production. The project includes example apps, plugin modules, patch generation, and patch application logic. Resource patching (updating changed resources). Integration via a plugin/patch application module. Demo apps showing patch application. Dex hotfix patching (differential dex replacement).

Metawidget is a smart User Interface widget that populates itself, at runtime, with UI components to match the properties of your business objects. Supports Swing, Java Server Faces (JSF), GWT, Spring, Struts, Android, Hibernate, Groovy, JPA and more

The Wicket Stuff project makes third party components available using the Wicket web component framework. Subprojects of this project contain integrations for Spring, Groovy, Hibernate, Velocity and other popular Java open source projects.

Cross-platform data acquisition and visualization software with an embedded HTTP-server, binary protocol parsing library, protocol emulation server, remote secure administration server, embedded Groovy scripting facilities and HMI (SCADA) visualization module.

Root site: http://demoiselle.sourceforge.net. From that, access: framework, components, wizard, sample e process. Releases can be downloaded via Maven from http://demoiselle.sourceforge.net/repository

A J2EE Web Dev Framework, Struts style MVC, Event Driven like JSF and Ajax-enabled Client Scripting like YUI, Fine grained event binding, access to server variables in JavaScript & Webpages, Easy integration with Struts, No custom tags & No complex API.

[fleXive] is a next-generation Java EE 5 content repository that provides enterprise-level persistence with security, SQL-like query language, a JSF-based web administration and reusable JSF components for integration into existing and new applications.

Glue Stick dependency injection framework is used for assembling and configuring Java applications from external bean definition and configuration files. There are several supported bean definition file formats, such as Groovy, JSON and Spring XML.

Snippetory is a platform for java developers dealing with any text generation. The abstraction layer helps to keep the issues of the 'view' in the view, while all logic is implemented in java. Editing, debugging and testing, all with the tools one is already used to. The separation of template keeps the template simple, the logic compact, and easy to navigate, and offers completely new re-usage scenarios. Sourceforge code hosting is abandoned. Primary site is now https://gitlab.com/jproggy/Snippetory

The Amplify MDA project is aimed at delivering a 'model-to-text' generator tool with real-world applicability in less than 1000 lines of Java/Groovy code.

Apache Bigtop is a project focused on building and packaging the Hadoop ecosystem and related big data components. It provides a consistent framework for testing, packaging, and deploying Hadoop distributions, including tools like HDFS, YARN, Spark, Hive, HBase, and more. By maintaining cross-platform builds (RPMs, DEBs, Docker images, and Kubernetes support), Bigtop makes it easier for organizations to deploy big data stacks in different environments. It also includes a set of integration tests and smoke tests to ensure compatibility and stability between ecosystem components. Developers and operators can use Bigtop to assemble customized Hadoop distributions tailored to their infrastructure and workloads. Its focus on reproducibility and packaging reduces friction in deploying large-scale data processing systems and ensures that different components of the Hadoop ecosystem work well together.

AppJoint is a minimalist Android componentization tool that aims to simplify cross-module communication in modularized Android projects. In complex apps broken into multiple modules or “features,” invoking methods or classes across module boundaries can become cumbersome or tightly coupled. AppJoint uses a small set of annotations and a simple runtime API to decouple modules: one module can declare a method interface, annotate it, and other modules can call it dynamically without direct dependency on the implementation. The tool hides much of the boilerplate of dependency injection or manual wiring of interfaces. It allows progressive modularization: you can incrementally introduce AppJoint in parts of an existing app without rewriting everything. The design focuses on being lightweight and easy to adopt—only a few annotations and calls are needed. In multi-module Android architectures, it helps maintain loose coupling and cleaner module boundaries.

The asyncobjects framework is intendend for implementing event-driven network applications. It provides higher level API if compared with Java NIO. Initial code is based asyncobjects prototype from sebyla.sf.net project.

A framework for creating service-oriented representations of common websites, using them to create composite services, and providing AJAX methods to "mash-up" these services.

Concise and fast Java library for object transformations: * Object mapper between classes, using annotations * Type converter for any class (or Type, even Generics) Supporting dynamic languages as OGNL or Groovy for custom expressions Maven dependency: <dependency> <groupId>net.sf.kfgodel</groupId> <artifactId>bean2bean</artifactId> <version>1.1.2</version> </dependency> Don't forget to add custom repository: <repository> <id>tenpines_repo</id> <name>Repositorio 10pines</name> <url>http://services.10pines.com:8081/artifactory/repo</url> </repository>

Platform for creating workflow based systems like DMS, CMS or CRM. It use Grails as web framework, Bootstrap as UI, Activiti as process engine.

Catharsis Social Web Widgets is a modern software library which provides useful social media widgets to include on web pages of your site. It comes adapted for several popular web frameworks and technologies: 1. ASP.NET MVC (https://github.com/prokhor-ozornin/Catharsis.NET.Web.Widgets) 2. Grails (https://github.com/prokhor-ozornin/Catharsis.Grails.Widgets) As of the latest version, the following areas are covered : 1. Cackle 2. Disqus 3. Facebook 4. Google 5. IntenseDebate 6. Mail.ru 7. RuTube 8. Surfingbird 9. Tumblr 10. Twitter 11. Vimeo 12. VKontakte 13. Yandex 14. YouTube 15. VideoJS

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.

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.

A small library that provides a powerful and container-less Dependency-Injection mechanism, via AspectJ and Groovy. If you are tired of reams of XML configuration files, managing complex factories and containers, this non-API solution may appeal to you.

Contextor is a light-weight simple-to-use Java based library to help developers and researchers working with the general concept of a resource; as examples, resources can be text resources, web resources, images and videos.