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Flowise

Build AI Chatbots Without Coding — Flowise

Build AI chatbots and agents with a drag-and-drop editor — no coding needed, fully self-hosted and free.

v3.1.2
Apr 2026
WindowsmacOSLinuxFreeOpen Source

Building an AI chatbot normally requires knowing LangChain, writing Python, managing API keys, and deploying a backend. Flowise removes all of that — it's a visual, node-based editor where you drag components onto a canvas, connect them with lines, and get a working AI workflow without writing a single line of code.

The practical applications are broad. Connect a PDF document as a knowledge source, add an OpenAI or Ollama language model node, and you have a chatbot that answers questions about your document. Add a memory node and it remembers the conversation context. Add a web search tool and it can look up real-time information. Each of these additions is a drag-and-drop operation.

Flowise supports dozens of integrations: OpenAI, Anthropic, Azure OpenAI, local Ollama models, Pinecone and Chroma for vector storage, Google Drive and Notion as document sources, Slack and WhatsApp as deployment targets. The agent mode lets you build autonomous AI that can browse the web, run code, query databases, and chain multiple steps together.

Because Flowise is self-hosted, your data stays on your infrastructure. There's no per-message fee, no rate limit imposed by the platform, and no vendor lock-in. Run it locally with a single 'npx flowise start' command, or deploy to a server with Docker.

At 52,000+ GitHub stars, Flowise is among the most adopted open-source AI tools available. Apache-2.0 licensed, actively maintained, free for both personal and commercial use.

Related Tools

  • Ollama — Run local LLMs like Llama and Mistral to power your Flowise chatbot entirely offline with no API costs
  • Skyvern — Automate web tasks with AI agents to feed real-time web data into your Flowise workflows

FAQ

Is Flowise free?+
Yes, Flowise is free and open source under the Apache-2.0 license. You can self-host it for free for personal or commercial use. There is a cloud-hosted version with a free tier and paid plans for teams, but self-hosting is fully functional at no cost.
How to build an AI chatbot without coding for free?+
Install Flowise with 'npx flowise start', open the browser interface, and drag components onto the canvas — a language model node, a document loader, and a memory node. Connect them, click Deploy, and your chatbot is running. No Python, no APIs to write, no backend to configure.
Best free alternative to Botpress or Voiceflow?+
Flowise is the strongest free self-hosted alternative. Botpress and Voiceflow charge per conversation or per seat for advanced features. Flowise is free to self-host with no per-message limits, and supports more AI models including local Ollama models for fully private deployments.
Flowise vs n8n — which is better for AI automation?+
Both are visual workflow tools, but with different strengths. Flowise is purpose-built for LLM and AI agent workflows — it speaks LangChain natively and handles vector stores, memory, and AI models as first-class components. n8n is a broader automation platform good for API integrations and data pipelines. Use Flowise when the workflow is AI-centric; n8n when you need to connect many external services.