Open-Source platforms for RAG, offering out-of-the-box functionality:

• OpenRAG (https://docs.openr.ag/)
• Dify - visual approach, more like n8n
• RAGFlow :
  • Knowledge-graphs in ElasticSearch
• LangFlow
• https://github.com/pingcap/autoflow
• LightRAG https://github.com/hkuds/lightrag - knowledge-graph based RAG approach, based on an academic paper
• Pipeshub (Could not get it working so far)