Memory & RAG AI agent tools
54 memory & RAG tools in the AgentScout directory, each with a link-checked listing. Memory layers, vector and graph stores, and document parsers that give agents long-term memory and let them search your files: tools like Mem0, Zep, Supermemory, Cognee, LlamaParse and MarkItDown.
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There are 54 memory & RAG tools: 48 open source, 1 source-available, 2 free or freemium, 2 paid, usage-based or enterprise, 1 pricing on the maker's site.
Quick comparison Top 10 of 54 listed below. Pricing as the maker states it; blank means we don't have it.
| Tool | Pricing | Best for | Open source |
|---|---|---|---|
 Graphicle | Open source | Give agents memory | Yes |
 Memori | Open source + cloud | Give agents memory | Yes |
 xerj | Open source | Give agents memory | Yes |
 Hy-Memory | Open source | Give agents memory | Yes |
 Beacon | Open source | Write code | Yes |
 ktx | Open source | Give agents memory | Yes |
 OpenLore | Open source | Write code | Yes |
 projectmem | Open source | Write code | Yes |
 KiwiFS | See site | Research the web | |
 Second Brain | Open source | Connect tools via MCP | Yes |
Tasks in this category
Showing 54 of 54 tools
Graphicle
Graphicle, from KarLex AI, is a single local Rust program that gives Claude Code, Cursor, Codex and other MCP agents a code graph and memory, returning excerpts with file and line references from your code, docs and past sessions, with no account or telemetry.
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Memori
An LLM-, database- and framework-agnostic memory layer that turns what agents do and say into structured, persistent state they can recall in later runs. Open source to self-host, or use Memori Cloud with an API key.
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xerj
A local-first search engine and MCP server for agents: one Rust binary indexes code, docs, logs, CSV/JSONL and PDFs for full-text, vector and hybrid search plus agent memory, behind an Elasticsearch-compatible API.
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Hy-Memory
Tencent Hunyuan's open-source memory system for agents that extracts, organizes and recalls long-term memories across sessions, with a memory hub and plugins for popular agent tools.
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Beacon
An open-source memory layer that captures traces from coding agents across harnesses and turns them into self-improving memory and visibility into what your agents did.
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ktx
An open-source context layer for data and analytics agents that gives Claude Code, Codex and other agents a self-improving map of your warehouse, metrics and business definitions.
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OpenLore
A self-hosted knowledge repository for AI agents written in Go, where agents and teams share docs, notes and findings over SSH and MCP with scoped access.
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projectmem
A local-first memory layer for coding agents that records issues, attempts, fixes and decisions and warns your agent before it repeats a past mistake.
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KiwiFS
A markdown filesystem for agents and teams: searchable, structured and versioned knowledge in a single binary that agents can read and write.
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Second Brain
A free, open-source shared memory that runs in your own Cloudflare account, so Claude, ChatGPT, Cursor and other MCP clients can recall the same projects, preferences and decisions.
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ai-memory
Fabio Akita's open-source long-term memory layer for coding agents: one Rust binary that keeps plain-markdown project memory and typed handoffs shared across 20+ harnesses such as Claude Code, Codex, Cursor and Gemini CLI, so you can switch agents, machines or teammates without re-explaining the project.
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Memgraph
In-memory graph database used as the graph layer for GraphRAG pipelines and agent memory, with Cypher queries plus vector and text search.
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LongMemory
Local-first memory engine for agents that keeps durable, time-aware memories in SQLite and serves them to Claude, Copilot, Codex and others over MCP, CLI or HTTP.
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Pixeltable
Multimodal data layer that combines storage, transforms, indexing and retrieval in one Python library for building agents over images, video and documents.
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Headroom
Library, proxy and MCP server that compresses tool outputs, logs, files and RAG chunks locally before they reach the LLM, cutting tokens for coding agents.
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MemPalace
Local-first AI memory system that stores conversations verbatim with a pluggable backend and serves recall to agents without API calls.
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llmware
Framework for building private, local RAG and agent applications with small specialized models on AI PCs, edge and self-hosted setups.
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memU
Lightweight memory system that gives Codex, Claude Code, Cursor and other agents a shared memory across sessions and devices and distills reusable skills.
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txtai
All-in-one Python framework for semantic search, LLM orchestration and agents built on an embeddings database of vector, graph and relational indexes.
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UltraRAG
Low-code MCP-based framework from OpenBMB for building and debugging complex RAG pipelines with visible reasoning logic.
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Basic Memory
Persistent memory for Claude, Codex and Cursor stored as local Markdown knowledge, available open source or as a hosted cloud workspace.
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LeanCTX
Open-source context gateway that sits between AI tools and your code and data to control and shrink what the model sees.
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SimpleMem
Research-backed lifelong memory library for LLM agents that stores, compresses and retrieves text and multimodal memories, usable over MCP.
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Knowhere
Document parsing and retrieval system that turns messy files into structured, navigable memory for AI agents and RAG.
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Mnemosyne
Zero-cloud, SQLite-backed memory layer for Hermes, Claude Code, Cursor, Codex and custom agents with a single Python dependency.
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Memanto
Memory agent that manages what your other agents keep, resolve and forget across platforms.
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MarkItDown
Microsoft's Python tool and MCP server that converts PDFs, Office documents, images, audio and web pages to Markdown for LLM and agent pipelines.
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OpenViking
Context database for AI agents that keeps memory, knowledge and skills in one inspectable virtual filesystem agents can navigate.
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Qdrant MCP Server
Official Qdrant MCP server that lets agents store and retrieve memories and documents in the Qdrant vector database.
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Zep
Context layer that unifies business data, documents and conversations into memory so agents complete tasks correctly.
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Pieces
AI memory layer that captures context from your work so you and your AI tools can recover decisions and resume where you left off.
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Extend MCP
Extend's MCP server for turning documents into structured data: parse, extract, classify, split and fill PDF forms.
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LlamaParse
LlamaIndex's document processing platform that parses PDFs, scans and Office files into markdown or JSON and extracts, classifies and indexes them for agents.
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Supermemory
Memory and context engine for agents with an API, app and MCP server, which can also run fully locally.
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Mem0
Mem0 is an open-source memory layer for AI agents that extracts facts from conversations in a single add-only pass, links entities across memories and retrieves them in later sessions, with an Apache-2.0 SDK and a managed platform.
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Activeloop
Deep Lake, a multimodal database for AI that stores vectors, images, text and video so agents and RAG apps can search and retrieve them.
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LanceDB
Open-source multimodal vector database for search, RAG and agent memory.
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Claude-Mem
Gives coding agents memory across sessions by capturing what they do, compressing it and feeding the relevant context back in later.
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RAGFlow
Open-source RAG engine with deep document parsing and agent features for building grounded question-answering over your files.
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Hindsight
Agent memory system that stores experiences and learns from them so agents improve over time.
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PageIndex
Document index for reasoning-based, vectorless RAG that lets agents navigate long documents like a table of contents.
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Cognee
Open-source memory platform that builds knowledge graphs so agents keep long-term memory.
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Graphiti
Builds real-time, temporal knowledge graphs that serve as memory for AI agents.
Added
AgentMemory
Persistent memory layer for AI coding agents.
Added
Chroma
Open-source search and vector database widely used for agent memory and RAG.
Added
TencentDB-Agent-Memory
Team-level memory hub that turns conversations, docs and code into shared memory for agents.
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EverOS
Local-first, portable memory layer for AI agents stored as Markdown.
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MemOS
Memory operating system for LLMs and agents with persistent memory and retrieval.
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Honcho
Memory library and service for building stateful agents that remember users.
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Acontext
Memory layer that stores agent experience as reusable skills.
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ReMe
Memory management kit for agents.
Added
seekdb
AI-native search database for agent storage combining vector, text and structured data.
Added
MemMachine
Universal memory layer for AI agents.
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Agentset
Open-source RAG platform for building agents and apps that answer accurately from your documents.
Added
Top memory & RAG repos on GitHub (51)
| Repo | GitHub stars | Licence | Last push |
|---|---|---|---|
| MarkItDown ↗ | 190,824 | MIT | 2026-10-20 |
| Claude-Mem ↗ | 101,230 | Apache License 2.0 | 2026-10-20 |
| RAGFlow ↗ | 92,335 | Apache License 2.0 | 2026-10-21 |
| Headroom ↗ | 75,629 | Apache License 2.0 | 2026-10-21 |
| Mem0 ↗ | 67,147 | Apache License 2.0 | 2026-10-21 |
| MemPalace ↗ | 59,622 | MIT | 2026-10-20 |
| Hindsight ↗ | 50,483 | MIT | 2026-10-21 |
| OpenViking ↗ | 40,217 | GNU Affero General Public License v3.0 | 2026-10-21 |
| PageIndex ↗ | 39,186 | MIT | 2026-10-21 |
| Cognee ↗ | 32,405 | Apache License 2.0 | 2026-10-16 |
| Graphiti ↗ | 31,819 | Apache License 2.0 | 2026-10-21 |
| Supermemory ↗ | 31,281 | MIT | 2026-10-18 |
| AgentMemory ↗ | 29,593 | Apache License 2.0 | 2026-10-21 |
| Chroma ↗ | 29,512 | Apache License 2.0 | 2026-10-17 |
| TencentDB-Agent-Memory ↗ | 29,346 | MIT | 2026-10-21 |
Top 15 of 51 by stars. Stars and licence come from each repo, checked when the listing was last verified.
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Facts come from our directory listings; pricing is as each maker states it. Check official sites before you choose.