Langflow
Visual node editor for building and serving LLM agents and workflows
What it is
Langflow is a drag-and-drop builder where you connect components for language models, vector stores, retrieval, and tools into flows, then test them in a built-in playground. Each flow can be served as an API endpoint or exposed as an MCP server, and any component can be edited in Python. Developers use it to prototype and ship agents, multi-agent setups, and RAG pipelines without writing all the glue code, running it locally, in Docker, or through the desktop app.