# Langflow

> Open-source visual builder for AI agents, RAG apps and MCP servers, with Python customization and API deployment

Source: https://dontaskagain.com/langflow
Website: https://www.langflow.org/?utm_source=dontaskagain
Pricing: Freemium
Categories: [Agent builders](https://dontaskagain.com/categories/agent-builders.md), [Open source](https://dontaskagain.com/categories/open-source.md)
Listed: 2026-10-19
Updated: 2026-10-19

Langflow is an open-source, low-code tool for building and deploying AI agents, RAG applications and MCP servers. Developers assemble flows by dragging components onto a visual editor, then serve each flow as an API.

**Key features:**

- Build flows with drag-and-drop components and visual state.
- Customize any component in Python.
- Swap and compare models inside a flow.
- Run a single agent or a fleet of agents that use components as tools.
- Start from hundreds of pre-built flows and components.
- Connect to OpenAI, Anthropic, Amazon Bedrock, Ollama, Pinecone, Qdrant, MongoDB, Notion, Slack, GitHub and more.

Langflow is open source under the MIT license, installs with pip and can be self-hosted, or run on a free cloud account with the same Langflow in both. An enterprise-grade cloud is offered for production deployments.

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