Langflow

Langflow is a low-code visual tool for building AI agents and retrieval-augmented generation (RAG) workflows. Its drag-and-drop interface allows developers to quickly prototype complex AI logic by connecting pre-built components like LLMs, vector stores, and tools. It supports all major language models, databases, and integrations, and gives users fine-grained control through Python customization. Designed for developers and solopreneurs who want to iterate rapidly without boilerplate, Langflow suits use cases such as customer support agents, knowledge base Q&A, and data analysis pipelines. Flows can be deployed as APIs, and the open-source version offers a free cloud tier for collaboration and scaling.