Try Flowise — Free & Open-Source
Build LLM flows visually using LangChain components. Self-host in minutes with Node.js.
Get Flowise FreeWhat is Flowise?
Flowise is an open-source, low-code tool for building LLM-powered applications using a drag-and-drop visual interface. Built on top of LangChain and LlamaIndex, it exposes their powerful components (chains, agents, memory, tools, vector stores) as visual nodes that you can connect on a canvas.
In 2026, Flowise is particularly popular among developers who want the power of LangChain without writing boilerplate code, and among teams that need to prototype and share LLM flows quickly.
Key Features: 8.0/10
1. Visual LangChain Editor
Every LangChain component is available as a visual node: LLMs, prompt templates, document loaders, text splitters, vector stores, retrievers, chains, agents, and tools. Connect them visually and see the flow execute in real time.
2. API Endpoint Generation
Every flow automatically generates an API endpoint. Deploy a chatbot or pipeline and immediately get a REST API and embed code—no backend work required.
3. Chat Interface
Test your flows with a built-in chat interface. Share a chatbot link with teammates or embed it in any website with a simple iframe or script tag.
4. Credential Management
Secure storage for API keys (OpenAI, Anthropic, Pinecone, etc.) that are referenced by name in flows—keeping sensitive credentials out of configuration files.
Pros
- ✓ Free and fully open-source
- ✓ LangChain power with visual interface
- ✓ Instant API endpoint for every flow
- ✓ Built-in chat UI for testing
- ✓ Easy self-hosting (npm or Docker)
- ✓ Active community and frequent updates
Cons
- ✗ Less polished than Dify's UI
- ✗ Limited built-in RAG features vs Dify
- ✗ Debugging complex flows is challenging
- ✗ Node.js only — no Python backend
Flowise vs Dify
| Feature | Flowise | Dify |
|---|---|---|
| Language | Node.js (TypeScript) | Python |
| Self-Hosting | Very easy (npm install) | Docker required |
| RAG Support | Via LangChain nodes | Built-in, more powerful |
| UI Quality | Good | Better polished |
| Plugin Ecosystem | LangChain ecosystem | Dedicated marketplace |
| Price | Fully free | Free self-hosted / $59+ cloud |
Verdict: Is Flowise Worth It?
Yes, especially for developers comfortable with Node.js who want the easiest path to deploying LangChain-based applications. Flowise's instant API generation and embed capabilities make it the fastest tool for getting a prototype into the hands of users.
Choose Flowise over Dify if you want simpler self-hosting and a Node.js stack. Choose Dify if you need more advanced RAG features, better observability, or a Python backend.
Build LLM Flows Visually with Flowise
Free, open-source, and installs in 5 minutes. The easiest way to use LangChain visually.
Try Flowise Free