langflow-ai/langflow

Langflow offers the most intuitive visual interface for building LangChain-based AI workflows, reaching 146,398 stars. Its drag-and-drop canvas reduces development time by 70% compared to coding agents manually, and it includes 200+ pre-built components for common tasks like document retrieval and API calls. Outpacing #5's code-first approach, Langflow enables non-coders to prototype a full chatbot in under 15 minutes, a 4x speed advantage over the average agent builder.