AI Index

Memory systems

Products that give AI agents and assistants persistent memory, from hosted commercial services to open-source libraries. 44 entries: 13 commercial · 12 open source + paid cloud · 18 open source · 1 research.

Sort:

Open sourceno commits in 332 daysA-MEMAgentic memory with dynamic Zettelkasten-style organization

★ 1,214 on GitHub

Open sourceagentmemory

rohitg00 (indie)

Shared local memory server; BM25+vector+graph fused (RRF)

★ 30,253 on GitHub · +7 today

Open sourceai-memoryCross-vendor memory handoff for coding agents (Claude Code <-> Codex <-> Cursor)

★ 15,549 on GitHub · +15 today

CommercialAmazon Bedrock AgentCore Memory

AWS

Fully managed agent memory: short-term session events plus long-term extracted facts and preferences

Short-term: $1.00 per GB ingested, $0.20 per GB retrieved, $0.10 per GB-month…

Open source + paid cloudBasic Memory

Basic Machines

Markdown-files-as-source-of-truth with semantic graph in SQLite; Obsidian-compatible

★ 4,544 on GitHub · +2 today

CommercialChatsee.ai

Chatsee

Failure-intelligence memory layer (captures recurring agent failure patterns)Open source + paid cloudclaude-mem

thedotmack (indie)

Coding-agent session memory (compression + hybrid recall, MCP tools)

★ 115,606 on GitHub · +149 today

Open source + paid cloudCognee

Cognee (Berlin)

Unstructured data to knowledge-graph memory

★ 33,205 on GitHub · +13 today

CommercialCohere North 2 agent memory

Cohere

Persistent memory for Cohere North agents with budget/automation controls Open sourceno commits in 111 daysCortex MemoryLiving knowledge-graph / hierarchical memory, hybrid storage

★ 320 on GitHub

CommercialDatabricks Agent Memory

Databricks

Beta long-term agent memory in workspace-scoped stores backed by Lakebase, with semantic and BM25 retrieval

During preview, billed for the underlying Lakebase instance that stores memor…

Open sourceEngram

Gentleman-Programming

Single Go binary memory; SQLite FTS5; git-based sync

★ 7,890 on GitHub · +5 today

Open sourceEverOS

EverMind AI

Markdown-native, local-first portable memory layer

★ 13,867 on GitHub · +5 today

Open source + paid cloudGrok Build Memory

xAI

Persistent markdown memory for the Grok Build coding agent: conventions, decisions, and project facts

★ 27,739 on GitHub

Open source + paid cloudHindsight

Vectorize

Biomimetic memory networks (facts/experiences/beliefs) with Retain-Recall-Reflect

★ 60,234 on GitHub · +90 today

Open sourceHoncho

Plastic Labs

Memory library for stateful agents ('memory as reasoning')

★ 8,051 on GitHub · +4 today

CommercialIBM watsonx Orchestrate agent memory

IBM

Preview agent memory that learns user preferences and work context from chats and persists across sessions

Included with watsonx Orchestrate plans: 30-day trial, Essentials from $530/m…

Open sourceLangMem

LangChain

SDK for memory on LangGraph store (personalization scoped)

★ 1,759 on GitHub · +2 today

Open source + paid cloudLetta (ex-MemGPT)

Letta

Stateful agent runtime; model manages own memory (MemFS, git-backed Context Repositories)

★ 3,812 on GitHub · +4 today

CommercialMaximem Synap

Maximem

Managed agent memory with published eval harness Open sourcemcp-memory-serviceSelf-hosted MCP memory server: semantic memory, knowledge graph, autonomous consolidation; REST API + web dashboard, ONNX local embeddings

★ 2,106 on GitHub

Open source + paid cloudMem0

Mem0 Inc

Hosted memory layer + open source core

★ 68,745 on GitHub · +25 today

Open sourceMemMachine

MemVerge Inc

Open-source universal long-term memory layer

★ 3,086 on GitHub · +1 today

Open sourceno commits in 303 daysMemobase

MemoDB

Structured user profile + event timeline; SQL-queryable, batch/offline

★ 2,957 on GitHub · +2 today

Open source + paid cloudMemori

Memori Labs (ex-GibsonAI)

SQL-native memory (facts, decisions, outcomes, traces, preferences)

★ 17,526 on GitHub · +21 today

Open sourceMemOS

MemTensor

Memory operating system with graph-structured long-term memory

★ 12,343 on GitHub · +3 today

Open sourceMemPalaceVerbatim hierarchical storage; no LLM on main retrieval path

★ 60,501 on GitHub · +6 today

Open source + paid cloudmemU

NevaMind AI

Autonomous memory to knowledge graphs; 'intelligent filesystem' for agents

★ 14,611 on GitHub · +2 today

ResearchMemVerseResearch framework unifying parametric (fast) and hierarchical retrieval (slow) memory CommercialMicrosoft Foundry Agent Service Memory

Microsoft

Managed long-term agent memory: user profile, chat summary, and procedural memory with consolidation

Public preview: billed for the underlying chat and embedding models you confi…

CommercialMongoDB Atlas agent memory

MongoDB

Atlas-native agent memory: short-term session collections plus long-term facts via Search/Vector Search

Atlas clusters: Free M0 $0 (512 MB), Flex $0.011/hour (up to $30/month), Dedi…

Open sourceNeo4j Agent Memory Service

Neo4j Labs

Graph-native memory layer on Neo4j Aura with native vector search

★ 605 on GitHub

Open sourceOpenClawMarkdown-based agent memory (MEMORY.md, daily notes, 'dreaming' consolidation) + skills ecosystem

★ 394,280 on GitHub · +22 today

CommercialOracle AI Agent Memory

Oracle

Database-native unified memory (vector + structured state + JSON, transactional consistency)CommercialPersonal AIPrivate, programmable memory platform (Memory Core) for building persistent personal AIs and AI identities Open source + paid cloudRedis Agent Memory

Redis

Two-tier persistent agent memory (session + long-term) in Redis Iris with background extraction

★ 326 on GitHub

CommercialSalesforce Agentic Memory (Data 360)

Salesforce

Persistent episodic and semantic agent memory extracted from Data 360 conversations and scoped to a user

Data 360 consumption-based: Flex Credits $500 per 100k credits; Profiles $240…

CommercialSnowflake CoWork user memory

Snowflake

User memory that saves requested preferences in Snowflake CoWork and reuses them in later conversations

Cortex Agents orchestration billed per token plus tool charges per the Snowfl…

Open source + paid cloudSupermemoryMemory graph per user; developer API + MCP + personal app

★ 31,586 on GitHub · +9 today

Open sourceTeleMemHigh-performance drop-in Mem0 replacement with semantic dedup + multimodal video reasoning

★ 493 on GitHub

Open sourceTencentDB Agent Memory

TencentCloud

Team-level memory hub; 4 asset types (Chat Memory/Skill/LLM-Wiki/CodeGraph)

★ 30,733 on GitHub · +16 today

Open sourceVellum

Vellum AI

Open-source personal assistant with layered hybrid memory + personal knowledge base

★ 1,488 on GitHub · +1 today

Open source + paid cloudZep / Graphiti

Zep

Temporal knowledge graph memory (Graphiti engine); hosted Context Lake

★ 32,708 on GitHub · +13 today

CommercialZeroMemory

AINative

Agent memory API: multi-tier (working/episodic/semantic), GraphRAG hybrid, importance-weighted decay

Other sections