The best haystack alternatives

graphify

Graphify-Labs/graphify

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

Choose graphify if…

• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (141.6k)
• you specifically need antigravity or ast

Shares ai-agents, llm, mcp, rag with haystack.

deer-flow

bytedance/deer-flow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

Choose deer-flow if…

• MIT License suits your use better than Apache License 2.0
• you want the more widely starred option (84.9k)
• you specifically need agent or agentic

Shares ai, ai-agents, llm, multi-agent with haystack.

headroom

headroomlabs-ai/headroom

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

Choose headroom if…

• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (78.7k)
• you specifically need agent or anthropic

Shares ai, context-engineering, llm, mcp with haystack.

ai-agents-from-zero

didilili/ai-agents-from-zero

🚀 2026 最系统的 AI Agent 速成指南｜智能体实战教程 · 完整学习路径 + 实战项目 + 面试题库 · 对标大模型应用开发工程师岗位 · 覆盖LangChain / LangGraph / Coze / Dify / MCP / skills / LLM / RAG / 提示词 · 企业级部署与微调 · 从0到企业级落地 + 从学习到上线项目 + 面试准备一体化

Choose ai-agents-from-zero if…

• MIT License suits your use better than Apache License 2.0
• you want something your agent can install directly rather than a library to wire up yourself
• you prefer a smaller, narrower project to a large one
• you specifically need agent or ai-agent

Shares agent-framework, agentic-ai, llm, mcp with haystack.

AdalFlow

SylphAI-Inc/AdalFlow

AdalFlow: The library to build & auto-optimize LLM applications.

Choose AdalFlow if…

• MIT License suits your use better than Apache License 2.0
• you prefer a smaller, narrower project to a large one
• you specifically need agent or auto-prompting

Shares ai, framework, generative-ai, information-retrieval with haystack.

langchain

langchain-ai/langchain

The agent engineering platform.

Choose langchain if…

• MIT License suits your use better than Apache License 2.0
• you want the more widely starred option (148.9k)
• you specifically need anthropic or chatgpt

Shares agents, ai, ai-agents, framework with haystack.

mem0

mem0ai/mem0

The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

Choose mem0 if…

• you want the more widely starred option (68.3k)
• you specifically need agentic-memory or agentic-memory-system

Shares agents, ai, ai-agents, genai with haystack.

llama_index

run-llama/llama_index

LlamaIndex is the document processing platform for AI

Choose llama_index if…

• MIT License suits your use better than Apache License 2.0
• you want the more widely starred option (52.8k)
• you specifically need application or data

Shares agents, framework, llm, rag with haystack.

langgraph

langchain-ai/langgraph

Build resilient agents.

Choose langgraph if…

• MIT License suits your use better than Apache License 2.0
• you want the more widely starred option (44.4k)
• you specifically need chatgpt or deepagents

Shares agents, ai, ai-agents, framework with haystack.

PageIndex

VectifyAI/PageIndex

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

Choose PageIndex if…

• MIT License suits your use better than Apache License 2.0
• you specifically need context-engineering or information-retrieval

Shares agentic-ai, agents, ai, ai-agents with haystack.

khoj

khoj-ai/khoj

Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.

Choose khoj if…

• GNU Affero General Public License v3.0 suits your use better than Apache License 2.0
• you specifically need agent or assistant

Shares ai, llm, rag, semantic-search with haystack.

book-to-skill

virgiliojr94/book-to-skill

Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

Choose book-to-skill if…

• MIT License suits your use better than Apache License 2.0
• you want something your agent can install directly rather than a library to wire up yourself
• you specifically need agent-skills or book-to-skill

Shares ai-agents, context-engineering, llm, rag with haystack.