Flowise

Flowise is an open source drag-and-drop platform for building chatbots, RAG applications, and LLM flows on a visual canvas, compatible with LangChain and LlamaIndex, and deployable as a production-ready API.

Visually design complex AI flows (document retrieval, agents, prompt chains) without writing code, and expose them as an API to integrate into your own application.

For developers who want maximum technical control and integration flexibility (100+), with the option to self-host on AWS, Azure, or GCP.

1. Sign up for the cloud version or deploy Flowise on your own server (Docker)
2. Drag and connect nodes on the canvas to build your flow (model, vector database, tools)
3. Test the flow in the built-in test chat
4. Deploy the flow as an API or an embeddable chat widget

Starter cloud plan with 10,000 predictions/month; Pro adds team collaboration and 50,000 predictions/month. Self-hosted, the software is free, but you need to add the cost of AI tokens and a vector database (approximately $105-200/month combined).