Dify

Dify is an open-source LLM application development platform that bridges the gap between no-code simplicity and developer flexibility. It features a visual workflow orchestrator for building complex AI pipelines, a built-in RAG (Retrieval-Augmented Generation) engine for knowledge-based applications, and a comprehensive agent framework with tool integration. Dify supports multiple LLM backends (OpenAI, Claude, Llama, Qwen, and more), offers API publishing for embedding AI capabilities into existing products, and provides enterprise features including user management, logging, and analytics. It has gained massive adoption in both Chinese and international markets, particularly for building customer service bots, knowledge assistants, and internal productivity tools.