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  1. Home
  2. Alternatives
  3. Alternatives to Onyx
Onyx logo

Best Alternatives to Onyx

RAG Frameworks · 8 alternatives ranked of 43 in the category

Looking for alternatives to Onyx? These are the rag frameworks tools that score highest on adoption, reviews, benchmarks, and public code, with what separates each one from Onyx.

LlamaIndex logo
LlamaIndex

RAG Frameworks· llamaindex.ai

Open source

Data framework for document ingestion, retrieval, and RAG over private data.

52,333
Open source

How each alternative differs from Onyx

Ranked by adoption, review, benchmark, and repository signals. Each note below is drawn from the two products’ own catalog records, so a product with nothing to separate it from Onyx carries no note.

  1. 1

    LlamaIndex

    LlamaIndex carries 52k GitHub stars to Onyx's 32k.

  2. 3

    LangChain

    LangChain carries 147k GitHub stars to Onyx's 32k and shows 6 recorded adoptions against Onyx's 0.

  3. 4

    Firecrawl

    Firecrawl is freemium against Onyx's open source model and carries 186k GitHub stars to Onyx's 32k.

  4. 5

    Graphify

    Graphify carries 122k GitHub stars to Onyx's 32k.

  5. 6

    Microsoft MarkItDown

    Microsoft MarkItDown carries 186k GitHub stars to Onyx's 32k.

  6. 7
Haystack logo
Haystack

RAG Frameworks· haystack.deepset.ai

Open source

Open-source framework for production LLM applications, RAG pipelines, search, and agentic workflows.

26,632
Open source
LangChain logo
LangChain

RAG Frameworks· langchain.com

Open source

Framework for composing agents, RAG workflows, retrieval, and tool calls.

147,177
Open source
Firecrawl logo
Firecrawl

RAG Frameworks· firecrawl.dev

Freemium

Web data API and open-source crawling stack for turning sites into clean markdown, structured data, and agent-ready content for RAG and automation pipelines.

186,094
Open source
Graphify logo
Graphify

RAG Frameworks· github.com

Open source

Local-first code and document intelligence tool that builds queryable knowledge graphs with traceable extracted and inferred edges for coding agents.

121,914
Open source
Microsoft MarkItDown logo
Microsoft MarkItDown

RAG Frameworks· github.com

Open source

Microsoft MarkItDown is an open-source document conversion tool that turns files and office documents into Markdown for LLM, RAG, and text-analysis pipelines.

186,496
Open source
claude-mem logo
claude-mem

RAG Frameworks· github.com

Open source

Open-source persistent memory layer that captures, compresses, and retrieves coding-agent session context across Claude Code, Codex, Gemini, OpenCode, and other agents.

94,807
Open source
Cognee logo
Cognee

RAG Frameworks· cognee.ai

Open source

Open-source AI memory and knowledge graph engine for persistent agent context.

31,246
Open source

claude-mem

claude-mem carries 95k GitHub stars to Onyx's 32k.