Dify

Dify is an open-source web platform and API for teams building, deploying, and operating generative AI applications such as chatbots, agentic workflows, and RAG-based internal tools.

Key capabilities include:

• Visual orchestration studio with drag-and-drop nodes to design workflows, including LLM steps, knowledge retrieval, IF/ELSE logic, code execution, HTTP requests, and tool calls
• RAG engine to connect external knowledge bases and real-time data retrieval for grounded answers in enterprise Q&A and customer support
• LLM agent framework for autonomous agents that can use tools to complete multi-step tasks and automations
• Prompt IDE and LLMOps tooling for prompt iteration plus monitoring, logging, and observability to support production deployments

Pricing: Freemium, with both SaaS and self-hosting options.

What makes it notable is the combination of a no/low-code builder, multi-model support (including GPT, Llama 2, and Qwen, plus vendors such as Hugging Face and AWS Bedrock), and backend-as-a-service APIs that let product teams ship prototypes quickly and publish them as APIs or internal apps without building orchestration infrastructure from scratch.