Dify is an open-source LLM application development platform that lets product teams, AI engineers, and indie developers build chatbots, agents, and RAG-powered AI workflows without managing the underlying infrastructure. Branded as an LLM app builder for production-grade AI features, Dify combines a visual prompt orchestration canvas, retrieval-augmented generation pipelines, an enterprise-ready agent runtime, evaluation tooling, and integrations with OpenAI, Anthropic, and major vector databases. Dify is widely adopted by SaaS companies adding AI features to their products, internal tooling teams automating ticket triage, and startup founders launching custom AI agents without standing up a Python backend from scratch.