Side-by-side comparison of free tiers, features, privacy, and company background. Updated for 2026.
Visual AI workflow builder — 129.8K stars
A visual AI workflow builder with 129.8K+ stars — one of the most popular open-source AI platforms. It lets you build RAG pipelines, chatbots, and agent workflows through a drag-and-drop canvas without writing code.
Self-host with Docker or try the cloud sandbox → Drag and drop nodes to build a RAG chatbot → Connect your documents and deploy with one click
Drag-and-drop LangChain builder
A drag-and-drop interface for building LangChain workflows visually. Perfect for experimenting with RAG pipelines, chatbots, and agent chains without writing orchestration code from scratch.
Self-host with Docker (Apache 2.0 license) → Drag LangChain components onto the canvas → Connect nodes to build and test your AI workflow