The best PageIndex alternatives

llama_index

run-llama/llama_index

LlamaIndex is the document processing platform for AI

Choose llama_index if…

• you specifically need application or data

Shares agents, llm, rag, vector-database with PageIndex.

TaskingAI

TaskingAI/TaskingAI

The open source platform for AI-native application development.

Choose TaskingAI if…

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

Shares ai, llm, rag, retrieval-augmented-generation with PageIndex.

langchain

langchain-ai/langchain

The agent engineering platform.

Choose langchain if…

• you want the more widely starred option (148.9k)
• you specifically need anthropic or chatgpt

Shares agents, ai, ai-agents, llm with PageIndex.

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…

• Apache License 2.0 suits your use better than MIT License
• 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, rag with PageIndex.

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…

• Apache License 2.0 suits your use better than MIT License
• you want the more widely starred option (68.3k)
• you specifically need agentic-memory or agentic-memory-system

Shares agents, ai, ai-agents, llm with PageIndex.

langgraph

langchain-ai/langgraph

Build resilient agents.

Choose langgraph if…

• you specifically need chatgpt or deepagents

Shares agents, ai, ai-agents, llm with PageIndex.

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…

• 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 PageIndex.

cognee

topoteretes/cognee

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

Choose cognee if…

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

Shares ai, ai-agents, context-engineering, vector-database with PageIndex.

haystack

deepset-ai/haystack

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

Choose haystack if…

• Apache License 2.0 suits your use better than MIT License
• you specifically need agent-framework or agentic-rag

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

WrenAI

Canner/WrenAI

GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.

Choose WrenAI if…

• you prefer a smaller, narrower project to a large one
• you specifically need bigquery or business-intelligence

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

AdalFlow

SylphAI-Inc/AdalFlow

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

Choose AdalFlow if…

• you prefer a smaller, narrower project to a large one
• you specifically need agent or auto-prompting

Shares ai, information-retrieval, llm, rag with PageIndex.

Hands-On-AI-Engineering

Sumanth077/Hands-On-AI-Engineering

A curated collection of practical AI projects implementing OCR systems, RAG, AI agents, and other AI use cases.

Choose Hands-On-AI-Engineering if…

• you prefer a smaller, narrower project to a large one
• you specifically need ai-engineering or generative-ai

Shares agents, ai, ai-agents, rag with PageIndex.