Best Open-source AI Application Frameworks & Orchestration tools

Dify

Open-source platform for building production-ready LLM applications

Sim

Rapidly build, run, and scale AI agent workflows.

RAGFlow

RAG engine with deep document understanding and agents

Flowise

Build and deploy AI agents visually with low-code workflows

Langflow

Visual builder for AI agents and workflows with API deployment

LangChain

Build reliable LLM agents with interchangeable components

Claude-Flow

AI-driven orchestration platform for coordinated multi-agent development

Haystack

End-to-end LLM framework for building production-ready RAG applications

LlamaIndex

Modular Python framework to index and query data for LLMs.