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Flowise

Open-source drag-and-drop LLM flow builder — chatbots and RAG in minutes

4.4(678 reviews)
open-sourceDR 73Open source (Apache 2.0). Cloud Starter $35/mo, Pro $99/mo, Enterprise custom.View full pricing →

Visit Flowise

https://flowiseai.com

About Flowise

Flowise is an open-source low-code tool for building customized LLM flows using a drag-and-drop visual interface. Built on LangChain and LlamaIndex under the hood, Flowise makes it easy to create RAG pipelines, conversational agents, and chatbots visually. It's one of the most starred LLM UI projects on GitHub with 35,000+ stars and a large community of builders deploying AI chatbots for production use cases.

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Key Features

Drag-and-drop flow builder for LLM pipelines
Pre-built LangChain and LlamaIndex components
Vector store integrations (Pinecone, Chroma, Qdrant)
API endpoint generation from any flow
Embeddable chat widget for websites
Conversation memory and context management
Credential manager for LLM API keys
Docker deployment support

Flowise Pros & Cons

Pros

  • +Easiest way to visually build LangChain workflows
  • +One-click API deployment from visual flows
  • +Great for building POC chatbots in hours, not days
  • +Active open-source community with shared templates
  • +Embeddable widget makes it easy to ship customer-facing chatbots

⚠️ Cons

  • Less powerful than code-first frameworks for complex logic
  • Self-hosting requires Node.js setup
  • Some advanced LangChain features not yet exposed visually
  • Scaling beyond POC requires Cloud plan

Who Is Flowise Best For?

👤Developers who want visual LangChain without raw code
👤Agencies building AI chatbots for clients
👤Teams prototyping RAG-powered internal search
👤Non-developers with basic technical ability

Tags

flowiseno-code aillm flowschatbot builderopen-sourcelangchainrag
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