Discover the most starred and trending open source tools tagged with #java.
Use Apache Causeway™ to rapidly develop domain-driven apps or modular monoliths in Java, on top of the Spring Boot platform. Write your business logic in entities, domain services or view models, and the framework dynamically generates a representation of that domain model as a webapp, GraphQL or RESTful API. For prototyping or production.
A plugin for generating BuildConstants for any kind of Gradle projects: Java, Kotlin, Groovy, etc. Designed for KTS scripts.
A modern SCORM JavaScript runtime library.
The ultra-versatile RPG skills plugin
Mobile-first web interface for OpenCode AI agents. Manage, control, and code with multiple OpenCode agents from any device - your phone, tablet, or desktop. Features Git integration, file management, and real-time chat in a responsive PWA. Deploy with Docker for instant setup.
True Object-Oriented Java Web Framework without NULLs, Static Methods, Annotations, and Mutable Objects
Confidential Consortium Framework
A Java library for parsing and building iCalendar data models
Spring Cloud Consul
URDF Loaders for Unity and THREE.js with example ATHLETE URDF Files open sourced from NASA JPL
Apache Wicket - Component-based Java web framework
An open source Valkey client library that supports Valkey, and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python
The first open-source AI-driven tool for automatically generating system-level test cases (also known as fuzzing) for web/enterprise applications. Currently targeting whitebox and blackbox testing of Web APIs, like REST, GraphQL and RPC (e.g., gRPC and Thrift).
Object-Oriented Java primitives, as an alternative to Google Guava and Apache Commons
🚀 Open-source Ethereum consensus client written in Java
Common classes used in different Spring Cloud implementations
$mol - fastest reactive micro-modular compact flexible lazy ui web framework.
Java fake data generator
DataWave is an ingest/query framework that leverages Apache Accumulo to provide fast, secure data access.
Datadog APM client for Java