Agent Memory Systems Vector Databases

Persistent memory architectures for AI agents combining vector search, graph storage, and knowledge retrieval. Includes semantic memory layers, long-term recall systems, and multi-modal ingestion. Does NOT include general RAG frameworks, context window optimization, or prompt management platforms.

There are 186 agent memory systems tools tracked. 1 score above 70 (verified tier). The highest-rated is topoteretes/cognee at 77/100 with 13,204 stars. 5 of the top 10 are actively maintained.

Get all 186 projects as JSON

curl "https://pt-edge.onrender.com/api/v1/datasets/quality?domain=vector-db&subcategory=agent-memory-systems&limit=20"

Open to everyone — 100 requests/day, no key needed. Get a free key for 1,000/day.

# Tool Score Tier
1 topoteretes/cognee

Knowledge Engine for AI Agent Memory in 6 lines of code

77
Verified
2 CaviraOSS/OpenMemory

Local persistent memory store for LLM applications including claude desktop,...

64
Established
3 verygoodplugins/automem

AutoMem is a graph-vector memory service that gives AI assistants durable,...

61
Established
4 CortexReach/memory-lancedb-pro

Enhanced LanceDB memory plugin for OpenClaw — Hybrid Retrieval (Vector +...

59
Established
5 divagr18/memlayer

Plug-and-play memory for LLMs in 3 lines of code. Add persistent,...

58
Established
6 verygoodplugins/mcp-automem

AutoMem is a graph-vector memory service that gives AI assistants durable,...

58
Established
7 memvid/memvid

Memory layer for AI Agents. Replace complex RAG pipelines with a serverless,...

57
Established
8 plastic-labs/honcho

Memory library for building stateful agents

53
Established
9 savantskie/persistent-ai-memory

A persistent local memory for AI, LLMs, or Copilot in VS Code.

51
Established
10 kothapavan1998/deeprecall

Recursive reasoning engine for AI agents and vector databases. Powered by MIT's RLM.

49
Emerging
11 Technoculture/personal-graph

Simple Graph Memory for AI applications

48
Emerging
12 prefrontal-systems/cortexgraph

Temporal memory system for AI assistants with human-like forgetting curves....

48
Emerging
13 neurondb/neurondb

PostgreSQL extension for vector search, embeddings, and ML, plus NeuronAgent...

48
Emerging
14 orneryd/Mimir

Mimir - Fully open and customizable memory bank with semantic vector search...

46
Emerging
15 jayzeng/pi-memory

Persistent memory extension for pi with daily logs, scratchpad, and optional...

45
Emerging
16 fellanH/context-vault

Persistent memory for AI agents — save and search knowledge across sessions...

44
Emerging
17 jjang-ai/vmlx

vMLX - Cont Batch, Prefix, Paged, KV Cache Quant, VL - Powers MLX Studio....

44
Emerging
18 reorproject/reor

Private & local AI personal knowledge management app for high entropy people.

44
Emerging
19 zircote/subcog

Persistent memory system for AI coding assistants. Captures decisions,...

44
Emerging
20 prosperitypirate/codexfi

Persistent memory for OpenCode AI agents. Embedded LanceDB + Voyage AI...

44
Emerging
21 raold/second-brain

🧠 AI Second Brain — 100% Local Knowledge Management Private, self-hosted...

44
Emerging
22 remembra-ai/remembra

Universal memory layer for AI applications. Self-host in minutes. Open source.

44
Emerging
23 marklubin/synix

Memory architectures that evolve with your agent

44
Emerging
24 RBKunnela/ALMA-memory

Persistent memory for AI agents - Learn, remember, improve. Alternative to...

44
Emerging
25 joelvdhoeven/memord

A local shared memory layer for all your AI tools — Claude, Cursor,...

43
Emerging
26 memfuse/memfuse

Official Core Services for MemFuse - the lightning-fast open-source memory...

43
Emerging
27 Terronex-dev/aifbin-recall

Local-first memory server for AI agents. Query AIF-BIN semantic memory files...

43
Emerging
28 Filippo-Venturini/ctxvault

Local memory infrastructure for AI agents. Isolated vaults you compose,...

43
Emerging
29 bhf/aeron-cache

A KV store built with Aeron, SBE and Agrona. RAFT clustered and fast by...

42
Emerging
30 JasonDocton/lucid-memory

Memory for AI that works like yours—local, instant, persistent. 13x faster...

40
Emerging
31 riyogarta/syne

AI Agent Framework with Unlimited Memory — PostgreSQL-native, self-evolving,...

40
Emerging
32 Itz-Agasta/context0

Decentralized memory-sharing protocol for AI agent

40
Emerging
33 DonTizi/ReMind

Your Local Artificial Memory on your Device.

39
Emerging
34 serenichron/openclaw-memory-mem0

OpenClaw memory plugin backed by a self-hosted Mem0 REST API

38
Emerging
35 Papr-ai/memory-opensource

Predictive memory layer for AI agents. MongoDB + Qdrant + Neo4j with...

38
Emerging
36 Mdx2025/BrainX-The-First-Brain-for-OpenClaw

🧠 The First Brain for OpenClaw — Persistent vector memory for AI agents....

38
Emerging
37 marswangyang/personal-ai-memory

A local-first Chrome extension that passively captures ChatGPT, Gemini,...

38
Emerging
38 Ahen-Studio/mesosphere-backend

Open Source Relational and Vector Embeddings Database

36
Emerging
39 DewashishCodes/dolphin

Open-source persistent memory infrastructure for LLM applications.🐬

35
Emerging
40 itsjwill/claude-memory

Persistent memory for Claude Code. Auto-capture decisions, learnings, client...

35
Emerging
41 iret77/palaia

Palaia — Local, crash-safe persistent memory for OpenClaw agents....

35
Emerging
42 jcartu/rasputin-memory

An AI memory system that never forgets. Qdrant vectors + FalkorDB knowledge...

35
Emerging
43 Percolation-Labs/percolate

An agentic orchestrator *inside* a relational-vector-graph/key-value database!

35
Emerging
44 NP-compete/cognitive-memory

Memory that forgets, like humans do. A production-grade memory system for AI...

34
Emerging
45 omega-memory/memorystress

The first longitudinal benchmark for AI memory systems. Test LLM agents, RAG...

34
Emerging
46 marcusjihansson/memory_opt

Hierchical memory is the optimization technique applied to the 5 part memory...

34
Emerging
47 shawnhack/exocortex

Personal unified memory system for AI agents. SQLite-backed, local-first,...

34
Emerging
48 Bryptobricks/Structured-Memory-Engine

Persistent, self-maintaining memory for AI agents. 990 tests. <1ms recall....

34
Emerging
49 Framehood/go-agent-memory

Modular memory system for AI agents with semantic search, using Supabase...

33
Emerging
50 sobowalebukola/memcortex

Memcortex is a lightweight semantic memory layer for LLMs using open source...

33
Emerging
51 TyKolt/kremis

A minimal graph engine for grounded AI — records, associates, and retrieves,...

33
Emerging
52 Remskill/Cortex

Cortex: Open-Source AI Memory for your Codebase. Works with Claude CLI and...

33
Emerging
53 HBarefoot/engram

🧠 Persistent memory for AI agents. SQLite for agent state. Zero cloud...

32
Emerging
54 roli-lpci/zer0dex

Dual-layer memory for AI agents. Compressed index + vector store. 91%...

32
Emerging
55 alexpota/pg-agent-memory

Stateful AI agent memory layer for PostgreSQL with pgvector -...

32
Emerging
56 omnirexflora-labs/omnimemory

Production-ready memory framework for AI agents. Dual-agent synthesis,...

32
Emerging
57 fitz2882/vesper-memory

Intelligent memory system for AI agents with semantic search, knowledge...

31
Emerging
58 dungle-scrubs/hippo

Persistent memory for AI agents — facts, semantic search, conflict...

31
Emerging
59 tobs-code/cozo-memory

Persistent, local-first memory for AI agents. No cloud, no Docker, no...

31
Emerging
60 AkashaHQ/Vidya

Vidya — Hybrid memory plugin for OpenClaw agents. LanceDB vector store +...

31
Emerging
61 angrysky56/emotion_ai

The Aura Emotion AI system has chroma with a local embedding model, memvid...

30
Emerging
62 memfuse/memfuse-python

Official Python SDK for MemFuse - the lightning-fast open-source memory...

28
Experimental
63 andrewginns/mcp-mind-palace

Persistent, searchable knowledge base for Large Language Models

27
Experimental
64 johnkf5-ops/cecil-protocol

Persistent memory and identity protocol for AI systems with evidence-aware...

25
Experimental
65 gambletan/cortex

Persistent memory engine for AI agents — 4-tier memory, people graph,...

25
Experimental
66 cuemap-dev/cuemap

A deterministic, high-performance memory engine. Built in Rust.

25
Experimental
67 Emmanuel-Bamidele/supavector

Persistent AI memory engine

25
Experimental
68 ApiliumCode/aingle

Semantic knowledge graph engine with Raft consensus, HNSW vector search,...

25
Experimental
69 viditraj/llmfs

Filesystem-based persistent memory for LLMs and AI agents -- unlimited...

24
Experimental
70 Lithium2012/MineContext

🛠️ Simplify your tasks with MineContext, an open-source AI tool that...

24
Experimental
71 wheevu/episodic-memory-pipeline

Gives local AI agents long-term memory by separating what they experience...

24
Experimental
72 raghuram369/synapse

The privacy-first memory engine for AI agents. Setup wizard, per-user...

24
Experimental
73 vakharwalad23/MnemoGraph

A human-like memory system combining vectors with graph-based relationship inference.

24
Experimental
74 danilop/semstash

Unlimited semantic storage for humans and AI agents

24
Experimental
75 xwj-vic/AI-Memory

A biomimetic memory server for AI Agents implementing human-like STM/LTM...

24
Experimental
76 Pomilon/Mnemonic

A semantic meta-search engine and synthesis workstation featuring...

23
Experimental
77 Primo-Studio/openclaw-memoria

Memoria — Multi-layer persistent memory plugin for OpenClaw. SQLite + FTS5 +...

23
Experimental
78 ecocee/SnailDB

SnailDB — A fast, scalable AI-native database built for LLM memory,...

23
Experimental
79 splinterhq/libsplinter

Splinter is an atomic, lock-free persist-able shared memory KV & vector...

23
Experimental
80 engrama-labs/engrama

Open-source long-term memory infrastructure for AI agents. Self-hostable....

23
Experimental
81 AIkaptan/Mnemora

A local-first, privacy-focused personal context engine that lets you chat...

23
Experimental
82 themreza/Metacontext

Metacontext is an AI-native, multi-agent system that centralizes knowledge...

23
Experimental
83 RankMegaCraft51/memfuse-python

MemFuse Python SDK offers a simple way to integrate memory capabilities into...

23
Experimental
84 breninfps/memlayer

🧠 Enhance LLMs with Memlayer for intelligent, contextual memory and fast...

23
Experimental
85 Zoranner/memo-brain

Long-term memory for AI coding assistants. Rust CLI with semantic search,...

23
Experimental
86 omarnagy91/mnemonic

🧠 Self-hosted AI memory for OpenClaw agents. Supermemory alternative,...

23
Experimental
87 mnemebrain/mnemebrain-rust

Rust SDK for MnemeBrain — a belief memory system for AI agents. Supports...

22
Experimental
88 lobs-ai/lobs-memory

Persistent memory search server — hybrid BM25 + vector search, neural...

22
Experimental
89 IASolutionOrg/Cortex

🧠 Universal long-term memory for AI agents. GraphRAG-powered knowledge base...

22
Experimental
90 CARBANOID/Digi-Brain

DigiBrain is a second brain web platform that stores links (tweets, YouTube...

22
Experimental
91 biofers/braimory

Self-hosted semantic memory for AI assistants via MCP. Vector search,...

22
Experimental
92 manasdb/manasdb

The Memory Layer for AI Applications. Moves RAG intelligence (RRF, MMR, PII...

22
Experimental
93 Abhinav1234abhinav/neurostack

Index and search Markdown vaults as knowledge graphs to provide AI agents...

22
Experimental
94 gbh3247872997-del/cuba-memorys

Provide AI agents with long-term memory using a neuroscience-based knowledge...

22
Experimental
95 docaohieu2808/Engram-Mem

Persistent memory for AI agents. Dual-memory system (episodic vector +...

22
Experimental
96 Atlas-Os1/openclaw-memory-vectorize

Semantic long-term memory for AI agents using Cloudflare Vectorize + Workers...

22
Experimental
97 0x000NULL/vex-memory

A human-inspired memory system for AI agents

22
Experimental
98 vvezre/Mem

Hybrid memory skill for assistants with SQLite, FTS5, and Chroma for...

22
Experimental
99 Sachin5464/reasonkit-mem

🚀 Build memory and retrieval infrastructure for ReasonKit, enhancing data...

22
Experimental
100 rinfa0108/openbrain

OpenBrain is an open-source machine-readable memory layer for agentic...

22
Experimental
101 M4cs/ctxovrflw-client

Universal AI context & memory layer. Shared memory for every AI agent via MCP.

22
Experimental
102 heybeaux/engram

Memory infrastructure for AI agents. Type-aware, time-aware,...

22
Experimental
103 wjy9902/memvault

Production-ready long-term memory server for AI agents. Built on memU with...

22
Experimental
104 OctavianTocan/mem0-api

A production-ready FastAPI service for semantic memory management using...

22
Experimental
105 elvatis/openclaw-memory-core

OpenClaw shared library: Vector store, embedding logic, and JSONL...

22
Experimental
106 MemoryRaven/MemoryRaven

🧠 Advanced AI memory and knowledge management system powered by $RAVEN

22
Experimental
107 eastythenob8-svg/graph-memory

Manage and compress long conversation histories into structured knowledge...

22
Experimental
108 Calvinxc1/vector-graph-memory

Hybrid vector-graph memory backend for AI agents with semantic search,...

22
Experimental
109 AyushSonuu/memharness

Framework-agnostic memory infrastructure for AI agents — 8 memory types,...

22
Experimental
110 flaggdavid-source/amarin-memory

Persistent, adaptive memory for AI agents — semantic search, temporal decay,...

22
Experimental
111 gkanellopoulos/mnemefusion

Unified memory engine for AI applications — "SQLite for AI memory."...

22
Experimental
112 mabo-du/SOMA

Shared Open Memory Architecture — a federated memory protocol for AI agents

22
Experimental
113 OnlyinOhio234/MemoryRaven

🪶 Capture and explore digital consciousness with MemoryRaven, a powerful...

21
Experimental
114 oxgeneral/agentmem

Lightweight persistent memory for AI agents. One SQLite file. Hybrid search....

21
Experimental
115 Oculusnoob/vesper-memory

🧠 Build a simple, local memory system that learns and adapts without...

21
Experimental
116 FusionpactTech/fusionpact-vectordb

⚡ The Agent-Native Retrieval Engine — Hybrid Vector + Reasoning + Memory for...

21
Experimental
117 claudettetheai/engram

Production-grade persistent memory for AI agents. Hybrid BM25 + vector...

21
Experimental
118 cosmiclasagnadev/zmem

Local-first, agent-oriented memory substrate for engineering decisions and...

21
Experimental
119 ajitpratap0/openclaw-cortex

Persistent, semantically searchable memory for AI agents

21
Experimental
120 sakhama/memfuse

MemFuse offers a robust memory layer for large language models, enhancing...

21
Experimental
121 leo2007960216/deeprecall

🔍 Enable recursive data reasoning with DeepRecall by integrating vector...

21
Experimental
122 Aurorasylvani/memo-brain

🧠 Enhance AI memory with Memo, allowing your coding assistant to remember...

21
Experimental
123 Lilily58/Mem

🧠 Build persistent, hybrid conversational memory using SQLite, full-text...

21
Experimental
124 Ucotron/ucotron

Cognitive memory framework for LLMs — graph + vector storage, LazyGraphRAG,...

21
Experimental
125 default741/monday-kernel

A polyglot (Rust/Python/C#) local intelligence engine that bridges the gap...

21
Experimental
126 jbushman/openclaw-pgmemory

Persistent semantic memory for OpenClaw agents — PostgreSQL + pgvector

21
Experimental
127 ashankgupta/echomind

A second brain that lets you store, search, and reflect on your thoughts...

21
Experimental
128 heyloo-cheng/openclaw-memory-system

Complete memory system implementation for OpenClaw - 3-layer memory model...

21
Experimental
129 Lumi-node/ARMS

ARMS: A Spatial Memory Fabric for AI Systems. Position IS relationship....

21
Experimental
130 engram-os/engram-os

An AI OS architecture emphasizing edge computing with privacy-by-design principles.

21
Experimental
131 nakishiyaman/tessera

Local-first note-taking app built with Tauri 2.x (Rust + React). Treats AI...

21
Experimental
132 NitcanKen/openclaw-mono-memory-system

A hybrid memory system for OpenClaw agents — SQLite FTS5 + LanceDB vectors +...

21
Experimental
133 sjy-dv/mind-x

Mind-X is my intelligent alter ego that understands me the best. It assists...

21
Experimental
134 compemperor/engram

Memory traces for AI agents - Self-improving memory system with quality...

21
Experimental
135 blackboxprogramming/remember

Remember — AI-powered persistent memory system for developers. Vector...

21
Experimental
136 shiro1707778/episodic-memory-pipeline

🧠 Build a cognitive architecture for AI that mimics human memory, separating...

21
Experimental
137 SainathPattipati/agent-memory-system

Long-term memory architecture for AI agents: episodic, semantic, and...

21
Experimental
138 yul761/ProjectMemory

Developer-first long-term memory engine (API + SDK + adapters) with layered...

21
Experimental
139 brian95240-ai-workspace/universal-living-memory

Standalone, hardware-agnostic, zero-cost AI memory orchestrator

20
Experimental
140 Ezzaldin97/tiny-semantic-caching

using Ollama and Duckdb Vector Search Extension to build in Memory Semantic...

20
Experimental
141 Irina1920/WMB-100K

WMB-100K — The first 100,000-turn benchmark for AI memory systems

18
Experimental
142 Dakkshin/kernalmemory

FAAPS/Memory layer for Applications

18
Experimental
143 no-ai-labs/mnemo

contextops

18
Experimental
144 MCPVOT/vot1

VOT1: Advanced Autonomous Intelligence System with memory management, OWL...

18
Experimental
145 Renatoelho/ContextDB

Vou mostrar como desenvolver um sistema para otimizar o uso de prompts em...

17
Experimental
146 Pinnacore-AI/ajatus-memory

AjatusMemory - Vector memory and learning profile system. Uses pgvector and...

17
Experimental
147 evgenygurin/vercel-mcp-memory

Semantic memory server for Claude AI with OpenAI embeddings and PostgreSQL...

17
Experimental
148 thiruthamil/MindEcho

MindEcho — A privacy-first journaling and reflection app built with FastAPI,...

17
Experimental
149 liv-skeete/ai-memory-architecture

Sophisticated memory system for AI assistants with hybrid vector-LLM...

17
Experimental
150 Matrixxboy/SynthCerebrum

SynthCerebrum is a fully offline, AI-powered assistant that reads and learns...

17
Experimental
151 aperswal/SpongeMemory

Memory infrastructure for AI agents that learns from retrieval. Every search...

17
Experimental
152 koladilip/hierarchical-context-ai-agent

Multi-turn AI agent with intelligent context management that solves context...

17
Experimental
153 Chair4ce/braindb

Persistent, semantic memory for AI agents. 98% recall accuracy, 20ms...

16
Experimental
154 solonai-com/grantai

Deterministic Memory for AI — Local, Private, Secure

16
Experimental
155 bianningtao/ABMemory

Production-ready Memory Layer for AI Applications -...

15
Experimental
156 tshephosekhu/semantic-memory

🔍 Enable seamless semantic search for AI agents without the hassle of...

15
Experimental
157 Acid-OP/second-brain-backend

A personal “second brain" where you can save any link, share your brain with...

15
Experimental
158 azizmabrouk11/NeuroMem

NeuroMem is a production-ready memory system for AI agents that mimics human...

14
Experimental
159 l11223/cursor-brain

Persistent memory system for Cursor IDE with semantic search, session...

14
Experimental
160 Vektor-Memory/Vektor-memory

VEKTOR replaces flat vector storage with a structured, multi-layered memory...

14
Experimental
161 esmatcm/openclaw-memory-lancedb-pro-skill

OpenClaw Memory LanceDB Pro 安装配置 Skill|AgentSkill for installing, enabling,...

14
Experimental
162 danwt/claude-memory-skill

Give Claude Code persistent memory across sessions with natural language...

14
Experimental
163 Mdx2025/-BrainX-The-First-Brain-for-OpenClaw

🧠 The First Brain for OpenClaw — Persistent vector memory for AI agents....

14
Experimental
164 3vilM33pl3/memory

Local knowledge base for coding agents with a Rust CLI/TUI, PostgreSQL...

14
Experimental
165 Ekaterinaacid284/memory-lancedb-pro-skill

Provide Claude Code with expert guidance to install, configure, and optimize...

14
Experimental
166 Himanshu-2678/memoria

A Persistent Memory System for AI Agents using Endee Vector Database

14
Experimental
167 erniulure/mem0-memory-system

🧠 AI-powered memory management system with multi-user support, Docker...

13
Experimental
168 orion1139/ebrain

Persistent External Brain for AI Coding Agents. 6 memory tiers, sub-100ms...

13
Experimental
169 BryanChasko/HeraldStack

A context-aware, emotionally adaptive AI framework with memory, entity...

13
Experimental
170 adamsandler123/ABMemory

🧠 Elevate AI with ABMemory, a robust memory layer that offers adaptive...

13
Experimental
171 Kimosabey/neuro-vault

Self-Optimizing GraphRAG and Multi-Modal Memory Engine utilizing Neo4j and...

13
Experimental
172 marc-shade/enhanced-memory-mcp

A high-performance memory management system for AI agents using SQLite with...

13
Experimental
173 Aswath25S/backup_brain

Comparative study of LLM-based knowledge graphs vs. vector DBs for personal...

13
Experimental
174 Uzxyr-btw/braindb

Create a reliable memory system for AI agents that captures meaningful...

13
Experimental
175 govindup63/second-brain-backend

Second Brain API: A backend service for managing, searching, and sharing...

13
Experimental
176 KayseanWasHereOnce/mnemosyneManohar

📝 Preserve human memories and wisdom with Mnemosyne, a digital archive that...

13
Experimental
177 vel5id/mnemosyne

A local-first, multimodal activity tracker that builds a user knowledge...

13
Experimental
178 krupesh-app/clawmemory-openclaw

ClawMemory plugin for OpenClaw - cloud-based semantic memory for AI agents

13
Experimental
179 ivanhonis/ai_home

Cognitive architecture prototype: persistent identity, long-term memory,...

13
Experimental
180 dorianlgs/langgraph-mem0

LangGraph + Mem0 integration demo showcasing an AI agent with persistent...

13
Experimental
181 Anmol-Srv/cortex

Organizational memory layer for LLMs - ingest documents, extract facts,...

11
Experimental
182 maku85/vemora

Repository-local memory system for LLM-assisted development.

11
Experimental
183 TejShah11/TheMemoryBox

The perfect way to keep your memories alive

11
Experimental
184 aquib-J/mysecondbrain.info-BE

Backend for `mysecondbrain.info`

11
Experimental
185 Acid-OP/second-brain-frontend

A personal “second brain" where you can save any link, share your brain with...

10
Experimental
186 MuneerAhmed03/MindR

Save and retrieve any thought, idea or memory just by texting.

10
Experimental