Data

Tools

Indexes

Applications

Experiments

Open Collective

An open API service for software projects hosted on Open Collective.

LangChain4j

Build LLM-powered applications in Java, Quarkus and Spring Boot. Chatbots, agents, RAG and much more!
Collective - Host: opensource - https://opencollective.com/langchain4j - Website: https://docs.langchain4j.dev/ - Code: https://github.com/langchain4j/langchain4j

github.com/langchain4j/langchain4j

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.

Stars: 12,852 - Last synced: 19 Aug 2026