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Free & open source
Langflow
Free alternative to: paid low-code AI workflow builders
License: MIT
Free terms: Free MIT-licensed; self-host via Docker/PyPI with your own model keys.
What it does
Drag-and-drop visual builder for LangChain/LangGraph agents, RAG pipelines, and LLM workflows, where every flow can be exposed as a REST API or MCP server.
Heads-up: License confirmed MIT on langflow-ai/langflow. Acquired by DataStax in 2025, and DataStax was acquired by IBM (closed May 2025) — still MIT-licensed open source. DataStax offers a hosted cloud option.
Get it
The project lives with its maintainers — we don't distribute it and we can't provide support for it.
Filed under: Free AI Agents & Automation Tools
Last verified: September 17, 2026 · Official source ↗
Heads-up: licenses and free tiers change. This page summarizes what the project's official source published on the verified date — confirm the details on the official page before you build on it. We never invent pricing or limits.
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