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Best R2R Alternatives in 2026

Updated

20 apps from retrieval-augmented generation tools ranked against R2R on the same published basis.

  1. 1
    AnythingLLM Free plan AndroidapiLinuxMacself-hosted 6.8
    R2R vs AnythingLLM
  2. 2
    Flowise Free plan apiLinuxMacself-hostedWeb $35/mo6.6
    R2R vs Flowise
  3. 3
    RAGFlow Free plan apiLinuxMacself-hostedWeb $29/mo6.6
    R2R vs RAGFlow
  4. 4
    I3K RAG Enterprise Free plan apiLinuxself-hostedWebWin Free6.5
    R2R vs I3K RAG Enterprise
  5. 5
    Dify Free plan apiself-hostedWeb $49.17/mo6.4
    R2R vs Dify
  6. 6
    Haystack Enterprise Platform Free plan apiself-hostedWeb Free6.4
    R2R vs Haystack Enterprise Platform
  7. 7
    OpenRAG Free plan apiself-hostedWeb Free6.4
    R2R vs OpenRAG
  8. 8
    Ragen Free plan apiself-hostedWeb Free6.4
    R2R vs Ragen
  9. 9
    Google Cloud Agent Evaluation Free trial apiWeb 6.3
    R2R vs Google Cloud Agent Evaluation
  10. 10
    LangChain Free plan apiself-hosted $39/mo6.3
    R2R vs LangChain
  11. 11
    Pathway Live Data Framework Free plan apiself-hosted Free6.3
    R2R vs Pathway Live Data Framework
  12. 12
    Langflow apiLinuxMacself-hostedWeb 5.6
    R2R vs Langflow
  13. 13
    PrivateGPT apiLinuxMacself-hostedWeb 5.6
    R2R vs PrivateGPT
  14. 14
    RAGStack LinuxMacWin 5.3
    R2R vs RAGStack
  15. 15
    Amazon Bedrock Knowledge Bases Web 5.2
    R2R vs Amazon Bedrock Knowledge Bases
  16. 16
    Haystack 5.1
    R2R vs Haystack
  17. 18
    txtai apiLinuxMacself-hostedWin 5.1
    R2R vs txtai
  18. 19
    Graphiti apiself-hosted 5.0
    R2R vs Graphiti
  19. 20
    LlamaIndex 5.0
    R2R vs LlamaIndex
  20. 21
    Progress Agentic RAG Free trial apiself-hostedWeb $700/mo5.0
    R2R vs Progress Agentic RAG

R2R alternatives compared

#AppScoreFree planFromRuns on
1AnythingLLM6.8Free plan—Android, API, Linux, Mac, self-hosted, Web, Windows
2Flowise6.6Free plan$35/moAPI, Linux, Mac, self-hosted, Web, Windows
3RAGFlow6.6Free plan$29/moAPI, Linux, Mac, self-hosted, Web
4I3K RAG Enterprise6.5Free planFreeAPI, Linux, self-hosted, Web, Windows
5Dify6.4Free plan$49.17/moAPI, self-hosted, Web
6Haystack Enterprise Platform6.4Free planFreeAPI, self-hosted, Web
7OpenRAG6.4Free planFreeAPI, self-hosted, Web
8Ragen6.4Free planFreeAPI, self-hosted, Web
9Google Cloud Agent Evaluation6.3No—API, Web
10LangChain6.3Free plan$39/moAPI, self-hosted
11Pathway Live Data Framework6.3Free planFreeAPI, self-hosted
12Langflow5.6No—API, Linux, Mac, self-hosted, Web, Windows
13PrivateGPT5.6No—API, Linux, Mac, self-hosted, Web, Windows
14RAGStack5.3No—Linux, Mac, Windows
15Amazon Bedrock Knowledge Bases5.2No—Web
16Haystack5.1No——
18txtai5.1No—API, Linux, Mac, self-hosted, Windows
19Graphiti5.0No—API, self-hosted
20LlamaIndex5.0No——
21Progress Agentic RAG5.0No$700/moAPI, self-hosted, Web
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Questions about R2R alternatives

What is the best alternative to R2R?

AnythingLLM, number 1 in retrieval-augmented generation tools with a score of 6.8 out of 10. The others here: Flowise, RAGFlow, I3K RAG Enterprise and 16 more.

What is the best free alternative to R2R?

AnythingLLM is the best-ranked alternative with a free plan. 10 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.