Langflow

Langflow is a visual platform for building and deploying AI-powered agents and workflows. It gives developers a drag-and-drop authoring experience, source-code access for custom Python components, an interactive playground for testing flows, and built-in API and MCP servers that turn workflows into tools for other applications.

Use Langflow to prototype multi-agent systems, retrieval workflows, automations, and LLM applications with support for major model providers, vector databases, observability integrations, and a growing library of AI tools.