RAGFlow
Deep-document-understanding RAG
LLM / RAG frameworkRAG engineApache-2.0Self-hostedPythonIntermediate
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What is RAGFlow?
RAGFlow is an open-source RAG engine built on deep document understanding, extracting clean structure from complex files to give LLMs grounded, cited answers.
Why people choose RAGFlow
- Strong document layout understanding
- Grounded answers with citations
- Self-hostable web UI
RAGFlow at a glance
| Category | LLM / RAG framework |
| Type | RAG engine |
| License | Apache-2.0 |
| Runs locally | Self-hosted |
| Built with | Python |
| Skill level | Intermediate |
| Best for | RAG over messy, complex documents |
Latest releases
Open-source alternatives to RAGFlow
Other open-source llm / rag framework tools worth comparing:
LangChainCompose chains, tools and agents
LlamaIndexThe data framework for RAG
HaystackProduction pipelines for search and RAG
DSPyProgram — not prompt — language models
txtaiAll-in-one embeddings database
Semantic KernelMicrosoft's enterprise agent frameworkGraphRAGRAG that builds a knowledge graph first
LiteLLMOne API for 100+ LLM providers
InstructorReliable structured outputs from LLMs
OutlinesGuarantee valid JSON and grammars
GuidanceInterleave control and generation
LLMWareEnterprise RAG with small specialised models
FlashRankUltra-light reranking for better RAG
Sentence TransformersThe standard way to make embeddings
RagasMeasure whether your RAG is any good
PromptfooUnit tests for your prompts
LangfuseSee what your LLM app actually did
PhoenixTrace, evaluate and debug LLM appsRAGFlow head-to-head
RAGFlow vs LangChainRAGFlow vs LlamaIndexRAGFlow vs HaystackRAGFlow vs DSPyRAGFlow vs txtaiRAGFlow vs Semantic KernelRAGFlow vs GraphRAGRAGFlow vs LiteLLMRAGFlow vs InstructorRAGFlow vs OutlinesRAGFlow vs GuidanceRAGFlow vs LLMWareRAGFlow vs FlashRankRAGFlow vs Sentence TransformersRAGFlow vs RagasRAGFlow vs PromptfooRAGFlow vs LangfuseRAGFlow vs Phoenix
FAQ
Is RAGFlow free?
RAGFlow is free and open-source (Apache-2.0 license), so you can use, self-host and modify it at no cost.
Can I run RAGFlow locally?
Yes. RAGFlow is designed to run on your own machine or server, keeping your data private.
What is the best alternative to RAGFlow?
Popular open-source alternatives include LangChain, LlamaIndex, Haystack. See the comparisons above to choose.
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