llama3.java

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.

Agents-flex is A Lightweight Java AI Application Development Framework.

DevoxxGenie is a plugin for IntelliJ IDEA that uses local LLM's (Ollama, LMStudio, GPT4All, Jan and Llama.cpp) and Cloud based LLMs to help review, test, explain your project code. Latest version now also supports Spec Driven Development with CLI Runners.

ChatGPT Java SDK。支持 GPT-4o、 GPT-5 API。开箱即用。An unofficial Java SDK for seamless integration with ChatGPT's GPT-5 and GPT-4 APIs. Ready-to-use, simple setup, and efficient for building AI-powered applications.