Flowise

Flowise lets you build AI workflows and LLM agent chains by dragging nodes together, no coding required. You can connect to OpenAI, Anthropic, and other models, set up memory and retrieval systems, and expose entire workflows as API endpoints that you call from your applications.

It's built for teams adding AI to existing apps without hiring ML engineers or learning complex frameworks. Deploy on your own server, chain complex LLM interactions visually, and call the result via REST to integrate AI capabilities into your backend.