LangGraph Learn alternatives for AI agents.

Retrieval and Retrieval-augmented LLMs

[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"

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

Privacy-respecting metasearch engine

Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience

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.

💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows

A modular graph-based Retrieval-Augmented Generation (RAG) system

This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial.

Free and Open Source, Distributed, RESTful Search Engine

high-performance graph database for real-time use cases

📚 《从零开始构建智能体》——从零开始的智能体原理与实践教程

Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust

Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents instant retrieval and long-term memory.

🔎 Open source distributed and RESTful search engine.

SearXNG is a free internet metasearch engine which aggregates results from various search services and databases. Users are neither tracked nor profiled.