Langflow

Visual LLM workflow builder — drag-and-drop RAG and agent pipelines with LangChain

Langflow is an open-source visual development tool for building RAG and multi-agent AI applications. Drag-and-drop interface for composing LangChain components — document loaders, vector stores, LLMs, prompts, and agents — into pipelines. Used for prototyping and deploying LLM workflows without writing boilerplate code.

Key specs

35,000 GitHub stars source

as of 2026-03-27