Free alternatives to Haystack

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

Resource	Pricing	Type	Licence	Platforms
Haystack	Open source	Library	Apache-2.0	web
Deer Flow	Open source	Library	MIT	web
Nanobot	Open source	Library	MIT	web · self-hosted
Claude Mem	Free	Library	Apache-2.0	web
LangChain	Free	Library	MIT	web
LangGraph	Free	Library	MIT	web
Coze Studio	Open source	Library	Apache-2.0	web

Deer Flow
deerflow.tech
Open-source long-horizon SuperAgent harness that researches, codes, and creates.

Library Open source MIT ★ 80k ✓ checked

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

Library Open source MIT ★ 47k ✓ checked

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

Library Free Apache-2.0 ★ 90k ✓ checked

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LangChain
github.com
Composable building blocks for LLM apps

Library Free MIT ★ 144k ✓ checked

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LangGraph
docs.langchain.com
Stateful agent graphs on LangChain

Library Free MIT ★ 39k ✓ checked

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Coze Studio
github.com
AI agent development platform with all-in-one visual tools, simplifying agent creation, debugging, and deployment like never before.

Library Open source Apache-2.0 ★ 21k ✓ checked

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