Repository Index

Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.

• spring-cloud
• java
• spring
• microservices

All-in-one IoT Platform - Device management, data collection, processing and visualization.

• visualization
• iot
• iot-platform
• mqtt

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

• database
• distributed-database
• distributed-sql-database
• sql

Very spicy additions to the Java programming language.

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.

• huggingface
• java
• langchain
• openai

TranslatedOnline cloud drive, network drive, OneDrive, cloud storage, private cloud, object storage, h5ai, upload, download

• h5ai
• clouddisk
• spring-boot
• vue

SeaTunnel is a multimodal, high-performance, distributed, massive data integration tool.

• data-integration
• high-performance
• offline
• real-time

This library provides a simple way to add a draggable sliding up panel (popularized by Google Music and Google Maps) to your Android application. Brought to you by Umano.

Test Automation Made Simple

• test-automation
• assertions
• testing-tools
• mock-server

Tiny, easily embeddable HTTP server in Java.

Apache Camel is an open source integration framework with 350+ connectors. Write routes in Java, YAML, or XML. Run on Spring Boot, Quarkus, or standalone. Apache License 2.0.

• camel
• integration
• java
• microservices

A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.

• domain-driven-design
• ddd
• ddd-architecture
• c4

Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.

• java
• commandline
• parser
• ansi-colors

This is the new home of the original DDD Sample app (previously hosted at sf.net)..

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.

• mock-server
• proxy
• java-client
• javascript-client

Code as configuration. Annotate a Java entity with @Erupt and ship a production-grade admin backend in minutes — UI, RBAC, audit logs and APIs, all generated at runtime. No codegen, no frontend.

• annotation
• erupt
• low-code
• mdd

These are the sample Bounded Contexts from the book "Implementing Domain-Driven Design" by Vaughn Vernon: http://vaughnvernon.co/?page_id=168

The Enterprise-ready testing and specification framework.

• java
• groovy
• testing
• bdd-style-testing-framework

Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.

• sql
• spark
• hive
• pyspark

LeafPic is a fluid, material-designed alternative gallery, it also is ad-free and open source under GPLv3 license. It doesn't miss any of the main features of a stock gallery, and we also have plans to add more useful features.

• material
• android
• gallery
• app

TwelveMonkeys ImageIO: Additional plug-ins and extensions for Java's ImageIO

• imageio
• plug-ins
• java
• tiff

jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group's focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams. The JDK 8's main efforts (default methods, lambdas, and the Stream API) were focused around maintaining backwards compatibility and implementing a functional API for parallelism.

100% open-source IoT Platform - Integrate your devices, add intelligence, build custom apps

• iot-platform
• iot
• energy
• building