Official Docs
Intermediate
★ Featured
LangChain · AI Agent Development
Docs for the most popular LLM application framework, covering model I/O, chains, retrieval, memory, and Agents, with a huge ecosystem.
Official Docs
Advanced
LangChain · AI Agent Development
LangChain's framework for orchestrating stateful Agents, supporting cycles, human-in-the-loop, persistence, and debugging.
Official Docs
Intermediate
LlamaIndex · AI Agent Development
A data framework for RAG development, covering retrieval, indexing, query engines, and Agents, with rich documentation examples.
Open Source Project
Beginner
★ Featured
Dify · AI Agent Development
An open-source LLM app development platform with visual orchestration of RAG and Agents, one-click deployment, and friendly Chinese docs.
Tool & Platform
Beginner
★ Featured
字节跳动 · AI Agent Development
ByteDance's no-code platform for building AI apps, with publishing to Feishu, WeChat, and other channels. New users get free credits.
Open Source Project
Beginner
FastGPT · AI Agent Development
An open-source knowledge base Q&A system with out-of-the-box visual RAG orchestration, APIs, and Docker deployment.