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Langflow

Checked 57m agoLink OKFree plan available
best overall

Best for Visual graph editor for building LangChain pipelines without writing Python. Prototype complex RAG flows and export to code.

When not UI tool for prototyping. production deployments often require direct LangChain code.

Visual, low-code builder for creating LLM workflows and AI applications with a drag-and-drop graph interface. Each node represents a component—an LLM call, a retriever, a prompt template, a tool—and you wire them together to build complex chains and agents without writing pipeline code. Open-source and self-hostable; integrates with LangChain under the hood. Free and open-source. Best for developers, data scientists, and AI engineers who want to prototype and iterate on LLM pipelines visually before committing to code.

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