Core OSS libraries:
LangChainandLangChain.js– reusable components and integrations for building LLM applicationsLangGraphandLangGraph.js– build LLM agents as graphsDeep AgentsandDeep Agents.js– agents that can plan, use subagents, and leverage file systems for complex tasks
Commercial Platform:
LangSmith– platform for building and monitoring production-grade LLM applications
OSS extensions and apps:
Deep Agents Code-dcodeis an open-source coding agent in your terminal, similar to Claude Code or Cursor, powered by any LLMOpen SWE– open-source asynchronous coding agentOpenWiki- CLI agent for codebase and personal memory wiki generation & maintenance.Agent Protocol– our attempt at codifying the framework-agnostic APIs that are needed to serve LLM agents in production
- Documentation – unified docs for LangChain projects and services (source)
- Community forum – discuss, get help, and talk shop
- LangChain Academy – comprehensive, free courses on LangChain libraries and products, made by the LangChain team
