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Free alternatives to LangChain

Similar free or open-source options in the same category, ranked by relevance and quality.

ResourcePricingTypeLicencePlatforms
LangChainFreeLibraryMITweb
Claude MemFreeLibraryApache-2.0web
LangGraphFreeLibraryMITweb
Deer FlowOpen sourceLibraryMITweb
NanobotOpen sourceLibraryMITweb · self-hosted
HaystackOpen sourceLibraryApache-2.0web
TransformersFreeLibraryApache-2.0web

  • Claude Mem

    cmem.ai

    Open-source AI memory for Claude Code, linkable to any MCP client.

    Library Free Apache-2.0 ★ 90k ✓ checked

    Visit site ↗

  • LangGraph

    docs.langchain.com

    Stateful agent graphs on LangChain

    Library Free MIT ★ 39k ✓ checked

    Visit site ↗

  • Deer Flow

    deerflow.tech

    Open-source long-horizon SuperAgent harness that researches, codes, and creates.

    Library Open source MIT ★ 80k ✓ checked

    Visit site ↗

  • Nanobot

    nanobot.wiki

    Lightweight open-source AI agent for your tools, chats, and workflows.

    Library Open source MIT ★ 47k ✓ checked

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  • Haystack

    github.com

    Open-source NLP / RAG framework

    Library Open source Apache-2.0 ★ 26k ✓ checked

    Visit site ↗

  • Transformers

    github.com

    The standard library for pretrained models

    Library Free Apache-2.0 ★ 164k ✓ checked

    Visit site ↗
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