System Catalog

xmemory Inc.

knowledge-base / Schema-based natural-language to structured state

OpenBMB

agentic-workflow / Multi-agent workflow with memory module

Zhu et al. (JD.com, 2026)

hierarchical-summary / Episode Memory + Note Memory with conflict-aware updates

2025 (December submission)

agentic-workflow / LangGraph closed-loop retrieve-reflect-answer router

You et al. (2025)

hybrid / System-1 vector retrieval + System-2 full deliberation fallback

VectorSpaceLab (BAAI-related)

hierarchical-summary / Deep-research memory filesystem

independent

graph-rag / Human-inspired probabilistic recall with decay

UC Berkeley / Stanford (Ho et al.)

episodic-buffer / Concept-level (not instance) abstract memory

Zhejiang University (Fang et al.)

episodic-buffer / Procedural memory of distilled step-instructions and scripts

Nemori AI (independent)

episodic-buffer / Event-segmentation-aligned episodic + semantic memory

MIRIX AI (Wang, Chen)

agentic-workflow / Six-type memory + multi-agent coordinator

MemTensor (Li, Zhang, et al.)

agentic-workflow / Memory OS with MemCube units across plaintext/activation/parameter

independent (Ahn et al.)

hierarchical-summary / Dual Compact + Vector memory

GibsonAI

hierarchical-summary / SQL-backed conversational memory

Google / UCSB (2025)

agentic-workflow / Prospective + retrospective reflection with online RL retrieval

Mindverse (Shang, Li, et al.)

hybrid / Personal LPM with SFT + DPO on user data

LangChain

hierarchical-summary / Episodic + semantic + procedural layers

AGI Research / Rutgers

agentic-workflow / Zettelkasten-inspired dynamic linked notes

HKUST (2025)

kv-cache-extension / Reversible hierarchical context compression

Backboard.io

hybrid / Stateful Portable Memory Stack + Unified LLM API

NevaMind-AI

hierarchical-summary / Filesystem-style (Resources / Items / Categories)

ModelScope (Alibaba)

hybrid / File-based + vector memory with ReAct compactor

Anthropic / Model Context Protocol

knowledge-base / KG-based persistent memory via MCP

caspianmoon

hybrid / Short/long-term with Ebbinghaus decay + concept graph

Lyzr AI

hybrid / Context-Aware Write-Time Memory Consolidation

Letta (formerly MemGPT)

agentic-workflow / Tool-driven memory blocks

Alibaba ModelScope

hierarchical-summary / Tiered consolidation with retrieval

CMU (Wang, Mao, Fried, Neubig)

agentic-workflow / Induced-workflow (routine) memory

Zep AI

graph-rag / Bi-temporal knowledge graph

Ragie Inc.

vector-rag / fully managed RAG-as-a-service

AIRI Institute / Moscow

graph-rag / Semantic KG + episodic vertices for world model

Zep AI

graph-rag / Temporal knowledge graph

Supermemory

graph-rag / Vector graph engine with ontology-aware edges

Cognee

hybrid / Graph + vector pipelines

Couchbase Inc.

vector-rag / multi-model NoSQL with vector index

Kingjulio8238

graph-rag / Knowledge graph + Llama-Index

THUDM

agentic-workflow / HTML-simplification web agent + curriculum

Mem0

hybrid / Vector + LLM-extracted facts

GoodAI

hybrid / Long-term + short-term + episodic triad

BAAI-Agents

agentic-workflow / Skill registry + memory/logging for GCC

zjunlp (Zhejiang University)

knowledge-base / Action-knowledge base + self-learning

MIT Media Lab

vector-rag / Wearable semantic memory with query/queryless modes

InfiniFlow

hybrid / Deep document understanding RAG

ServiceNow Research

agentic-workflow / Standardized Gym env for web agents (memory evaluation)

Shanghai AI Lab / MMLab (Wu et al.)

agentic-workflow / Skill library + long-term memory + tool discovery

ModelScope (Alibaba)

agentic-workflow / Production agent framework with pluggable memory

Microsoft

agentic-workflow / BaseMemory + ListMemory abstractions

CrewAI Inc.

agentic-workflow / role-based multi-agent orchestration

CrewAI Inc. (Joao Moura)

agentic-workflow / Crew-level short / long / entity / contextual memory

LangChain

agentic-workflow / Graph state + short/long-term memory checkpointers

Alibaba Tongyi Lab (X-PLUG)

agentic-workflow / Multi-platform GUI agent with long-horizon memory

MinorJerry et al.

agentic-workflow / Multimodal web agent with action/state history

deepset

vector-rag / Pipeline-based memory store

Tencent / mnotgod96

knowledge-base / UI documentation knowledge base from exploration

LlamaIndex

hybrid / Vector + chat memory buffers

Ant Group / Alibaba (Liu et al.)

episodic-buffer / Post-thinking thought cache with LSH retrieval

Berkeley / Letta

agentic-workflow / Virtual context with paging

CraftJarvis

episodic-buffer / Multimodal memory for open-world planning

University of Washington / Allen AI (Asai et al.)

agentic-workflow / Self-reflective on-demand retrieval with reflection tokens

QwenLM (Alibaba)

agentic-workflow / Qwen-native function calling + RAG memory

dataelement

agentic-workflow / Enterprise RAG/agent platform with HITL memory

Tsinghua University (Zhao et al.)

agentic-workflow / Natural-language insight extraction from training trajectories

InternLM (Shanghai AI Lab)

agentic-workflow / PyTorch-style agent with get_memory()/state_dict()

University of Warwick / Alibaba

hierarchical-summary / Memo-based iterative memorization-retrieval-response

Epsilla Inc. (YC S23)

vector-rag / parallel graph traversal vector DB

OpenInterpreter

agentic-workflow / Conversation-history memory with persistence hooks

kyegomez / Swarms Corp

agentic-workflow / Enterprise multi-agent orchestration with persistent memory

VectorShift Inc. (YC S23)

agentic-workflow / no-code generative AI pipeline platform

Mintplex Labs

vector-rag / Full-stack ChatGPT clone with workspace memory

Tsinghua University (Hu et al.)

knowledge-base / SQL database as symbolic memory with chain-of-memory

101dotxyz

episodic-buffer / Generative-agents clone with memory + reflection

MongoDB Inc.

vector-rag / document-db-native-vector

SID (YC)

agentic-workflow / agentic retrieval model

Nanyang Technological University (Zheng et al.)

agentic-workflow / Trajectory-as-exemplar prompting with exemplar memory

NTU / Salesforce (Zheng et al.)

episodic-buffer / Trajectory-as-exemplar prompting with exemplar memory

OpenBMB (Tsinghua)

agentic-workflow / Multi-agent task-solving + simulation with shared memory

Josh-XT

agentic-workflow / "Adaptive memory" with 40+ extensions

CAMEL-AI.org

agentic-workflow / Stateful memory + storage + retrieval for agent societies

eosphoros-ai

agentic-workflow / Data-centric agent with sandbox memory

Institute of Software, Chinese Academy of Sciences

vector-rag / Ebbinghaus-curve forgetting mechanism

Harbin Institute of Technology / SenseTime

vector-rag / Ebbinghaus forgetting curve + vector store

Fudan University (Li & Qiu)

agentic-workflow / Pre-thought externalized memory

Fudan (Li, Qiu)

episodic-buffer / Pre-thought high-confidence thoughts as memory

TransformerOptimus

agentic-workflow / Autonomous agent platform with vector memory

NVIDIA / Caltech / UT Austin / Stanford / ASU / UW (Wang et al.)

agentic-workflow / Ever-growing code skill library + curriculum

LangGenius

agentic-workflow / LLMOps platform with workflow + RAG memory

Dust (formerly XP1)

agentic-workflow / Horizontal Enterprise Agent Infrastructure

FlowiseAI

agentic-workflow / Low-code agent + memory builder

Stanford / Google

hierarchical-summary / Memory stream + reflection tree + planning

Stanford University / Google Research

agentic-workflow / Memory stream + reflection tree + planning

Beihang / NLPR (Wang et al.)

agentic-workflow / Agent + memory stream + memory controller

Significant Gravitas

agentic-workflow / Continuous agent platform + Forge toolkit

labring

agentic-workflow / Knowledge-base LLM platform with workflow memory

Microsoft Research

knowledge-base / LLM controller + expert-model registry

MultiOn (now AGI Inc.)

agentic-workflow / Web Motor Cortex Agent

Northeastern / MIT / Princeton (Shinn et al.)

agentic-workflow / Verbal reinforcement via episodic reflection buffer

Langflow-ai (DataStax)

agentic-workflow / Visual flow builder with memory components

Vellum AI Inc. (YC W23)

agentic-workflow / LLM workflow and evaluation platform

Athina AI (YC W23)

agentic-workflow / LLM evaluation and production monitoring

Microsoft Research

agentic-workflow / conversational multi-agent framework with no-code UI

Yohei Nakajima

agentic-workflow / Self-building "functionz" graph

SynaLinks

hybrid / Graph-based prompt programming (neuro-symbolic)

LangChain Inc.

agentic-workflow / graph-based agent runtime with observability

Lindy AI

agentic-workflow / Personalized AI Chief-of-Staff

Maxim AI Inc.

agentic-workflow / agent simulation and evaluation platform

DeepWisdom / geekan

agentic-workflow / SOP-driven multi-role memory

onyx-dot-app

hybrid / Enterprise search + agentic RAG

Stack AI Inc. (YC W23)

agentic-workflow / enterprise AI agent deployment platform

Adept AI Labs (acquired by Amazon 2024)

agentic-workflow / Computer-Use Agent (ACT-1)

Redis Ltd.

vector-rag / in-memory vector store with persistence

HoneyHive Inc.

agentic-workflow / AI agent observability and evaluation

Galileo Technologies Inc.

agentic-workflow / LLM evaluation with Luna foundation model

Personal AI

external-memory-network / Continuous Lifelong Memory Platform

UC Santa Barbara / Amazon (Wu, Lan, Liu, et al.)

external-memory-network / External dynamic memory + memory replay BPTT

Hebbia, Inc.

agentic-workflow / ISD (Inference-Search-Decomposition) Multi-Agent

Voiceflow Inc.

agentic-workflow / visual conversational agent builder

Glean Technologies

graph-rag / Enterprise Knowledge Graph + Hybrid Search

Botpress Inc.

agentic-workflow / developer-first open-source chatbot platform

Cognigy GmbH (acquired by NICE, July 2025)

agentic-workflow / enterprise conversational AI with persistent memory

Kore.ai Inc.

agentic-workflow / enterprise agentic AI platform with multi-LLM

Neo4j Inc.

graph-rag / managed property graph with vector search

Ben Sigman / Milla Jovovich (independent open-source)

hierarchical-summary / Memory Palace Hierarchical Spatial Index

2025 (December submission)

agentic-workflow / LangGraph closed-loop retrieve-reflect-answer router

OpenSPG / Ant Group

knowledge-base / Logical-form guided KG reasoning

OSU NLP Group

graph-rag / Extended PPR with deeper passage integration

HKUDS

graph-rag / Heterogeneous text+entity graph for small LMs

Backboard.io

hybrid / Stateful Portable Memory Stack + Unified LLM API

HKUDS (HKU Data Intelligence Lab)

graph-rag / Dual-level entity/relation retrieval

Lyzr AI

hybrid / Context-Aware Write-Time Memory Consolidation

BAAI / Qhjqhj00

external-memory-network / Long-context "memory model" + retriever + generator

Ragie Inc.

vector-rag / fully managed RAG-as-a-service

gusye1234

graph-rag / Minimal GraphRAG reference (~1100 LOC)

Anthropic

knowledge-base / Project-scoped knowledge container

illuin-tech

vector-rag / Multi-vector VLM page embeddings

GoMate Community

hybrid / Configurable modular RAG with deep-search

Cognee

hybrid / Graph + vector pipelines

Couchbase Inc.

vector-rag / multi-model NoSQL with vector index

Granola

episodic-buffer / No-Bot Local Audio Transcription + Note Enhancement

FalkorDB

graph-rag / Ontology-driven KG + multi-agent orchestration

OSU NLP Group (Ohio State University)

graph-rag / Hippocampal-inspired KG with Personalized PageRank

Microsoft

graph-rag / Entity-community hierarchical graph

InfiniFlow

hybrid / Deep document understanding RAG

LlamaIndex Inc.

vector-rag / managed RAG infrastructure with LlamaParse

Neo4j Labs

graph-rag / Unstructured-to-Neo4j ETL + chat

SciPhi-AI

hybrid / Production RAG with auto-KG and deep-research agent

TrueFoundry

vector-rag / Modular production RAG with incremental indexing

Mixedbread AI

external-memory-network / embedding and reranking model API

FutureHouse

agentic-workflow / Agentic RAG for scientific papers (3-phase)

BUPT-GAMMA

graph-rag / Path-based relational retrieval

Stanford (Sarthi, Abdullah et al.)

hierarchical-summary / Recursive bottom-up clustering + summarization tree

deepset

vector-rag / Pipeline-based memory store

ParadeDB Inc. (YC S23)

vector-rag / Postgres-native full-text and vector search

LlamaIndex

hybrid / Vector + chat memory buffers

Saner.AI

vector-rag / AI Second Brain with Semantic Capture

Datalab (datalab-to)

knowledge-base / Document-to-markdown/JSON pipeline

University of Washington / Allen AI (Asai et al.)

agentic-workflow / Self-reflective on-demand retrieval with reflection tokens

TurboPuffer Inc.

vector-rag / serverless object-storage vector engine

Weaviate

vector-rag / End-to-end RAG on Weaviate

QwenLM (Alibaba)

agentic-workflow / Qwen-native function calling + RAG memory

Vectorize Inc.

vector-rag / managed RAG pipeline builder

Voyage AI (acquired by MongoDB, Feb 2025)

external-memory-network / domain-specialized embedding API

dataelement

agentic-workflow / Enterprise RAG/agent platform with HITL memory

KX Systems

vector-rag / time-series-native vector store

Epsilla Inc. (YC S23)

vector-rag / parallel graph traversal vector DB

VectorShift Inc. (YC S23)

agentic-workflow / no-code generative AI pipeline platform

Mintplex Labs

vector-rag / Full-stack ChatGPT clone with workspace memory

Tsinghua University (Hu et al.)

knowledge-base / SQL database as symbolic memory with chain-of-memory

MongoDB Inc.

vector-rag / document-db-native-vector

MyScale Inc.

vector-rag / SQL-native vector database on ClickHouse

SID (YC)

agentic-workflow / agentic retrieval model

Carbon (acquired by Perplexity, Dec 2024)

vector-rag / enterprise data connector for RAG

Zylon AI

vector-rag / FastAPI + LlamaIndex RAG, air-gapped

QuivrHQ

vector-rag / "Second brain" opinionated RAG

Tsinghua / Microsoft (Cheng et al.)

vector-rag / Iterative self-retrieval (generator feeds its own memory)

LangGenius

agentic-workflow / LLMOps platform with workflow + RAG memory

Dust (formerly XP1)

agentic-workflow / Horizontal Enterprise Agent Infrastructure

FlowiseAI

agentic-workflow / Low-code agent + memory builder

labring

agentic-workflow / Knowledge-base LLM platform with workflow memory

LanceDB Inc. (YC S22)

vector-rag / multimodal columnar lakehouse

Langflow-ai (DataStax)

agentic-workflow / Visual flow builder with memory components

Notion Labs

vector-rag / Workspace-embedded RAG over personal and team pages

Supabase Inc.

vector-rag / managed pgvector on serverless Postgres

Vellum AI Inc. (YC W23)

agentic-workflow / LLM workflow and evaluation platform

Athina AI (YC W23)

agentic-workflow / LLM evaluation and production monitoring

LangChain Inc.

agentic-workflow / graph-based agent runtime with observability

Maxim AI Inc.

agentic-workflow / agent simulation and evaluation platform

onyx-dot-app

hybrid / Enterprise search + agentic RAG

Stack AI Inc. (YC W23)

agentic-workflow / enterprise AI agent deployment platform

Chroma

vector-rag / Embedded developer-first DB

Mendable (YC-backed)

vector-rag / Knowledge-Base Chat RAG

Nomic AI Inc.

external-memory-network / embedding visualization and retrieval platform

Vectara Inc.

vector-rag / grounded generation RAG-as-a-service

Unstructured Technologies Inc.

vector-rag / document preprocessing and ETL for RAG

Meta AI FAIR (Izacard et al.)

vector-rag / Contriever retriever + fusion-in-decoder few-shot

Marqo Pty Ltd

vector-rag / tensor search with integrated embedding

Princeton NLP (Zhong, Lei, Chen)

external-memory-network / Training-time memory augmentation with in-batch memories

Neon Inc.

vector-rag / serverless Postgres with pgvector

Redis Ltd.

vector-rag / in-memory vector store with persistence

HoneyHive Inc.

agentic-workflow / AI agent observability and evaluation

DeepMind (Borgeaud et al.)

vector-rag / Chunked cross-attention over 2T-token BERT-indexed datastore

Galileo Technologies Inc.

agentic-workflow / LLM evaluation with Luna foundation model

Heyday (shut down 2025)

vector-rag / Browser-extension passive memory resurface

Qdrant

vector-rag / Rust-based vector DB

pgvector OSS / Supabase Inc. / Neon Inc.

vector-rag / postgres-extension-vector

Activeloop Inc.

vector-rag / multimodal AI data lakehouse

Pinecone Systems

vector-rag / Managed serverless vector DB

Cohere Inc.

external-memory-network / multilingual multimodal embedding API

Mem Labs

vector-rag / Semantic Note Graph (no-folder AI second brain)

OpenSearch Project (AWS-led)

vector-rag / Lucene-based distributed search with kNN

NeuML

vector-rag / Embedded vector database

Hebbia, Inc.

agentic-workflow / ISD (Inference-Search-Decomposition) Multi-Agent

Jina AI GmbH

external-memory-network / long-context multimodal neural search

Google Research (Guu et al.)

vector-rag / Latent retriever pretrained with MLM backprop

Yahoo Japan

vector-rag / cloud-native distributed ANN engine

DataStax

vector-rag / managed Cassandra with vector search

Stanford / Facebook AI Research (Khandelwal et al.)

external-memory-network / Linearly interpolated kNN over LM embedding space

Zilliz

vector-rag / Distributed cloud-native vector DB

Weaviate

vector-rag / Open-source hybrid vector DB

Elastic N.V.

vector-rag / inverted-index-plus-dense-vector

Glean Technologies

graph-rag / Enterprise Knowledge Graph + Hybrid Search

Yahoo / Vespa.ai (independent OSS project)

vector-rag / hybrid lexical-vector engine

Manticore Software Ltd.

vector-rag / open-source SQL search engine with vector

SingleStore Inc.

vector-rag / htap-native-vector

Sana Labs

vector-rag / Unified Enterprise Knowledge + Learning Platform

Diffbot Inc.

knowledge-base / web-crawl knowledge graph API

Stardog Union Inc.

graph-rag / enterprise knowledge graph with SPARQL and virtual graphs

Neo4j Inc.

graph-rag / managed property graph with vector search

Franz Inc.

graph-rag / entity-event knowledge graph triplestore

Ontotext / Graphwise (merged with Semantic Web Company, 2025)

graph-rag / RDF triplestore with OWL2 inference

xmemory Inc.

knowledge-base / Schema-based natural-language to structured state

Soul Computer (YC-backed)

episodic-buffer / Persistent Lifelong AR Memory (Pickle OS)

independent

graph-rag / Human-inspired probabilistic recall with decay

Johns Hopkins / independent (2025)

graph-rag / Graph memory with human-inspired decay, refresh, and core-summary

MIRIX AI (Wang, Chen)

agentic-workflow / Six-type memory + multi-agent coordinator

GibsonAI

hierarchical-summary / SQL-backed conversational memory

Google / UCSB (2025)

agentic-workflow / Prospective + retrospective reflection with online RL retrieval

Mindverse (Shang, Li, et al.)

hybrid / Personal LPM with SFT + DPO on user data

LangChain

hierarchical-summary / Episodic + semantic + procedural layers

NevaMind-AI

hierarchical-summary / Filesystem-style (Resources / Items / Categories)

Friend

episodic-buffer / Always-listening companion pendant with emotional response

Google

knowledge-base / Personal context store

caspianmoon

hybrid / Short/long-term with Ebbinghaus decay + concept graph

Microsoft

knowledge-base / User profile store

Alibaba ModelScope

hierarchical-summary / Tiered consolidation with retrieval

Bee (acquired by Amazon 2026)

episodic-buffer / Always-On Ambient Wearable Memory

Zep AI

graph-rag / Temporal knowledge graph

Anthropic

knowledge-base / Project-scoped knowledge container

Tab (Avi Schiffmann)

episodic-buffer / Always-on wearable necklace with ambient context accumulation

Supermemory

graph-rag / Vector graph engine with ontology-aware edges

Limitless AI (acquired by Meta Dec 2025)

episodic-buffer / Meeting-Focused Wearable Transcription

Mem0

hybrid / Vector + LLM-extracted facts

GoodAI

hybrid / Long-term + short-term + episodic triad

MIT Media Lab

vector-rag / Wearable semantic memory with query/queryless modes

OpenAI

knowledge-base / Persistent user-fact store

Saner.AI

vector-rag / AI Second Brain with Semantic Capture

WithFeeling.AI

hierarchical-summary / Memory-to-Understanding Model (M2U)

Kindroid

hierarchical-summary / Five-Layer Cascaded Memory

MiniMax

episodic-buffer / Long-Context Character Conversation

Institute of Software, Chinese Academy of Sciences

vector-rag / Ebbinghaus-curve forgetting mechanism

Harbin Institute of Technology / SenseTime

vector-rag / Ebbinghaus forgetting curve + vector store

Inflection AI

episodic-buffer / Empathy-Optimized Conversational AI

QuivrHQ

vector-rag / "Second brain" opinionated RAG

Lindy AI

agentic-workflow / Personalized AI Chief-of-Staff

Glimpse AI, Inc.

hierarchical-summary / Identity Core + Multi-Tier Persistent Memory

Nomic AI Inc.

external-memory-network / embedding visualization and retrieval platform

Character.AI (Google investment)

episodic-buffer / Character-Scoped Conversational Context

Heyday (shut down 2025)

vector-rag / Browser-extension passive memory resurface

Personal AI

external-memory-network / Continuous Lifelong Memory Platform

Mem Labs

vector-rag / Semantic Note Graph (no-folder AI second brain)

Luka, Inc.

episodic-buffer / Memory Bank + Personality Neural Network

Cognigy GmbH (acquired by NICE, July 2025)

agentic-workflow / enterprise conversational AI with persistent memory

Kore.ai Inc.

agentic-workflow / enterprise agentic AI platform with multi-LLM

VectorSpaceLab (BAAI-related)

hierarchical-summary / Deep-research memory filesystem

independent (Ahn et al.)

hierarchical-summary / Dual Compact + Vector memory

HKUST (2025)

kv-cache-extension / Reversible hierarchical context compression

ModelScope (Alibaba)

hybrid / File-based + vector memory with ReAct compactor

lucidrains (community) / paper by Google Research

external-memory-network / Neural memory module (Memory-as-Context)

em-llm (academic consortium)

external-memory-network / Episodic segmentation via Bayesian surprise

BAAI / Qhjqhj00

external-memory-network / Long-context "memory model" + retriever + generator

Institute for Advanced Algorithms Research Shanghai / Peking University

kv-cache-extension / Third memory form: explicit KV memory

UCSD / Apple (Wang et al.)

external-memory-network / Fixed-size latent memory pool updated in-place

BAAI / Renmin University (Zhang et al.)

kv-cache-extension / Beacon tokens that compress activations at intervals

ModelScope (Alibaba)

agentic-workflow / Production agent framework with pluggable memory

Stanford (Sarthi, Abdullah et al.)

hierarchical-summary / Recursive bottom-up clustering + summarization tree

CMU / Princeton (Gu, Dao)

external-memory-network / Selective state-space model (input-dependent SSM)

Berkeley / Letta

agentic-workflow / Virtual context with paging

MIT Han Lab / Meta AI (Xiao et al.)

kv-cache-extension / Attention sinks + sliding window KV cache

Illinois / Meta (Han et al.)

kv-cache-extension / Lambda-shaped attention mask + distance limit

Microsoft Research (Ge et al.)

kv-cache-extension / LoRA encoder + frozen decoder compressed memory slots

UT Austin / Rice / CMU / Stanford / Meta (Zhang et al.)

kv-cache-extension / Dynamic KV eviction of non-Heavy-Hitter tokens

UCSB / Microsoft Research

external-memory-network / Decoupled frozen encoder + residual side network

EPFL (Mohtashami, Jaggi)

kv-cache-extension / Block-level landmark tokens with direct attention retrieval

RWKV Foundation / BlinkDL community

external-memory-network / Linear-attention RNN with receptance-weighted key-value

Rice / Stanford / Meta (Liu et al.)

kv-cache-extension / Persistence-of-importance KV pruning

Beihang / NLPR (Wang et al.)

agentic-workflow / Agent + memory stream + memory controller

LanceDB Inc. (YC S22)

vector-rag / multimodal columnar lakehouse

MIPT / DeepPavlov (Bulatov, Kuratov, Burtsev)

external-memory-network / Memory tokens passed between segments recurrently

Princeton NLP (Zhong, Lei, Chen)

external-memory-network / Training-time memory augmentation with in-batch memories

Adept AI Labs (acquired by Amazon 2024)

agentic-workflow / Computer-Use Agent (ACT-1)

Google Research (Wu, Rabe, Hutchins, Szegedy)

external-memory-network / Non-differentiable kNN lookup over (key,value) pairs

Instituto de Telecomunicações / DeepMind / IST (Martins, Marinho, Martins)

external-memory-network / Continuous-space attention over long-term memory

Activeloop Inc.

vector-rag / multimodal AI data lakehouse

UC Santa Barbara / Amazon (Wu, Lan, Liu, et al.)

external-memory-network / External dynamic memory + memory replay BPTT

Jina AI GmbH

external-memory-network / long-context multimodal neural search

DeepMind (Rae et al.)

external-memory-network / Compacted past-activation memory + TransformerXL short-term

xmemory Inc.

knowledge-base / Schema-based natural-language to structured state

OpenSPG / Ant Group

knowledge-base / Logical-form guided KG reasoning

OSU NLP Group

graph-rag / Extended PPR with deeper passage integration

HKUDS

graph-rag / Heterogeneous text+entity graph for small LMs

Anthropic / Model Context Protocol

knowledge-base / KG-based persistent memory via MCP

HKUDS (HKU Data Intelligence Lab)

graph-rag / Dual-level entity/relation retrieval

Zep AI

graph-rag / Bi-temporal knowledge graph

AIRI Institute / Moscow

graph-rag / Semantic KG + episodic vertices for world model

Institute for Advanced Algorithms Research Shanghai / Peking University

kv-cache-extension / Third memory form: explicit KV memory

gusye1234

graph-rag / Minimal GraphRAG reference (~1100 LOC)

Zep AI

graph-rag / Temporal knowledge graph

Supermemory

graph-rag / Vector graph engine with ontology-aware edges

Cognee

hybrid / Graph + vector pipelines

FalkorDB

graph-rag / Ontology-driven KG + multi-agent orchestration

OSU NLP Group (Ohio State University)

graph-rag / Hippocampal-inspired KG with Personalized PageRank

Kingjulio8238

graph-rag / Knowledge graph + Llama-Index

Microsoft

graph-rag / Entity-community hierarchical graph

zjunlp (Zhejiang University)

knowledge-base / Action-knowledge base + self-learning

IBM Research

external-memory-network / Brain-inspired distributed episodic memory

Neo4j Labs

graph-rag / Unstructured-to-Neo4j ETL + chat

SciPhi-AI

hybrid / Production RAG with auto-KG and deep-research agent

BUPT-GAMMA

graph-rag / Path-based relational retrieval

Tencent / mnotgod96

knowledge-base / UI documentation knowledge base from exploration

Cisco Research / independent (Kynoch & Latapie)

hybrid / Graph + vector with temporal belief updating

Tsinghua University (Hu et al.)

knowledge-base / SQL database as symbolic memory with chain-of-memory

eosphoros-ai

agentic-workflow / Data-centric agent with sandbox memory

Microsoft Research

knowledge-base / LLM controller + expert-model registry

SynaLinks

hybrid / Graph-based prompt programming (neuro-symbolic)

Meta AI FAIR (Izacard et al.)

vector-rag / Contriever retriever + fusion-in-decoder few-shot

Google Research (Guu et al.)

vector-rag / Latent retriever pretrained with MLM backprop

Weaviate

vector-rag / Open-source hybrid vector DB

Glean Technologies

graph-rag / Enterprise Knowledge Graph + Hybrid Search

Diffbot Inc.

knowledge-base / web-crawl knowledge graph API

Stardog Union Inc.

graph-rag / enterprise knowledge graph with SPARQL and virtual graphs

Neo4j Inc.

graph-rag / managed property graph with vector search

Franz Inc.

graph-rag / entity-event knowledge graph triplestore

Ontotext / Graphwise (merged with Semantic Web Company, 2025)

graph-rag / RDF triplestore with OWL2 inference

Ben Sigman / Milla Jovovich (independent open-source)

hierarchical-summary / Memory Palace Hierarchical Spatial Index

OpenBMB

agentic-workflow / Multi-agent workflow with memory module

Zhu et al. (JD.com, 2026)

hierarchical-summary / Episode Memory + Note Memory with conflict-aware updates

Soul Computer (YC-backed)

episodic-buffer / Persistent Lifelong AR Memory (Pickle OS)

You et al. (2025)

hybrid / System-1 vector retrieval + System-2 full deliberation fallback

independent

graph-rag / Human-inspired probabilistic recall with decay

Johns Hopkins / independent (2025)

graph-rag / Graph memory with human-inspired decay, refresh, and core-summary

Nemori AI (independent)

episodic-buffer / Event-segmentation-aligned episodic + semantic memory

independent (Ahn et al.)

hierarchical-summary / Dual Compact + Vector memory

Google / UCSB (2025)

agentic-workflow / Prospective + retrospective reflection with online RL retrieval

LangChain

hierarchical-summary / Episodic + semantic + procedural layers

Friend

episodic-buffer / Always-listening companion pendant with emotional response

Google

knowledge-base / Personal context store

em-llm (academic consortium)

external-memory-network / Episodic segmentation via Bayesian surprise

Letta (formerly MemGPT)

agentic-workflow / Tool-driven memory blocks

Alibaba ModelScope

hierarchical-summary / Tiered consolidation with retrieval

AIRI Institute / Moscow

graph-rag / Semantic KG + episodic vertices for world model

Bee (acquired by Amazon 2026)

episodic-buffer / Always-On Ambient Wearable Memory

Zep AI

graph-rag / Temporal knowledge graph

Anthropic

knowledge-base / Project-scoped knowledge container

Tab (Avi Schiffmann)

episodic-buffer / Always-on wearable necklace with ambient context accumulation

Supermemory

graph-rag / Vector graph engine with ontology-aware edges

Granola

episodic-buffer / No-Bot Local Audio Transcription + Note Enhancement

Limitless AI (acquired by Meta Dec 2025)

episodic-buffer / Meeting-Focused Wearable Transcription

Mem0

hybrid / Vector + LLM-extracted facts

BAAI-Agents

agentic-workflow / Skill registry + memory/logging for GCC

OpenAI

knowledge-base / Persistent user-fact store

CrewAI Inc.

agentic-workflow / role-based multi-agent orchestration

LangChain

agentic-workflow / Graph state + short/long-term memory checkpointers

LlamaIndex

hybrid / Vector + chat memory buffers

Ant Group / Alibaba (Liu et al.)

episodic-buffer / Post-thinking thought cache with LSH retrieval

Berkeley / Letta

agentic-workflow / Virtual context with paging

KX Systems

vector-rag / time-series-native vector store

University of Warwick / Alibaba

hierarchical-summary / Memo-based iterative memorization-retrieval-response

OpenInterpreter

agentic-workflow / Conversation-history memory with persistence hooks

WithFeeling.AI

hierarchical-summary / Memory-to-Understanding Model (M2U)

Cisco Research / independent (Kynoch & Latapie)

hybrid / Graph + vector with temporal belief updating

101dotxyz

episodic-buffer / Generative-agents clone with memory + reflection

Kindroid

hierarchical-summary / Five-Layer Cascaded Memory

Nanyang Technological University (Zheng et al.)

agentic-workflow / Trajectory-as-exemplar prompting with exemplar memory

NTU / Salesforce (Zheng et al.)

episodic-buffer / Trajectory-as-exemplar prompting with exemplar memory

MiniMax

episodic-buffer / Long-Context Character Conversation

OpenBMB (Tsinghua)

agentic-workflow / Multi-agent task-solving + simulation with shared memory

Harbin Institute of Technology / SenseTime

vector-rag / Ebbinghaus forgetting curve + vector store

Fudan (Li, Qiu)

episodic-buffer / Pre-thought high-confidence thoughts as memory

Inflection AI

episodic-buffer / Empathy-Optimized Conversational AI

Stanford / Google

hierarchical-summary / Memory stream + reflection tree + planning

Stanford University / Google Research

agentic-workflow / Memory stream + reflection tree + planning

Beihang / NLPR (Wang et al.)

agentic-workflow / Agent + memory stream + memory controller

MultiOn (now AGI Inc.)

agentic-workflow / Web Motor Cortex Agent

Nabla

agentic-workflow / Privacy-First LLM + STT Clinical Notes

Northeastern / MIT / Princeton (Shinn et al.)

agentic-workflow / Verbal reinforcement via episodic reflection buffer

Notion Labs

vector-rag / Workspace-embedded RAG over personal and team pages

LangChain Inc.

agentic-workflow / graph-based agent runtime with observability

Lindy AI

agentic-workflow / Personalized AI Chief-of-Staff

Glimpse AI, Inc.

hierarchical-summary / Identity Core + Multi-Tier Persistent Memory

PLAUD

episodic-buffer / Ultra-Thin Card Recorder + Cloud AI Summarization

Character.AI (Google investment)

episodic-buffer / Character-Scoped Conversational Context

Redis Ltd.

vector-rag / in-memory vector store with persistence

Nuance Communications (Microsoft)

agentic-workflow / Ambient Clinical Intelligence + GPT-4

Voiceflow Inc.

agentic-workflow / visual conversational agent builder

Abridge

agentic-workflow / Contextual Reasoning Engine for Clinical Documentation

Luka, Inc.

episodic-buffer / Memory Bank + Personality Neural Network

Botpress Inc.

agentic-workflow / developer-first open-source chatbot platform

Suki (formerly Robin AI)

agentic-workflow / Voice-Enabled Clinical NLP Assistant

Cognigy GmbH (acquired by NICE, July 2025)

agentic-workflow / enterprise conversational AI with persistent memory

Sana Labs

vector-rag / Unified Enterprise Knowledge + Learning Platform

Ben Sigman / Milla Jovovich (independent open-source)

hierarchical-summary / Memory Palace Hierarchical Spatial Index

Soul Computer (YC-backed)

episodic-buffer / Persistent Lifelong AR Memory (Pickle OS)

VectorSpaceLab (BAAI-related)

hierarchical-summary / Deep-research memory filesystem

Johns Hopkins / independent (2025)

graph-rag / Graph memory with human-inspired decay, refresh, and core-summary

UC Berkeley / Stanford (Ho et al.)

episodic-buffer / Concept-level (not instance) abstract memory

Zhejiang University (Fang et al.)

episodic-buffer / Procedural memory of distilled step-instructions and scripts

MemTensor (Li, Zhang, et al.)

agentic-workflow / Memory OS with MemCube units across plaintext/activation/parameter

Mindverse (Shang, Li, et al.)

hybrid / Personal LPM with SFT + DPO on user data

AGI Research / Rutgers

agentic-workflow / Zettelkasten-inspired dynamic linked notes

OSU NLP Group

graph-rag / Extended PPR with deeper passage integration

Backboard.io

hybrid / Stateful Portable Memory Stack + Unified LLM API

NevaMind-AI

hierarchical-summary / Filesystem-style (Resources / Items / Categories)

lucidrains (community) / paper by Google Research

external-memory-network / Neural memory module (Memory-as-Context)

Lyzr AI

hybrid / Context-Aware Write-Time Memory Consolidation

Letta (formerly MemGPT)

agentic-workflow / Tool-driven memory blocks

CMU (Wang, Mao, Fried, Neubig)

agentic-workflow / Induced-workflow (routine) memory

Zep AI

graph-rag / Bi-temporal knowledge graph

Bee (acquired by Amazon 2026)

episodic-buffer / Always-On Ambient Wearable Memory

Tab (Avi Schiffmann)

episodic-buffer / Always-on wearable necklace with ambient context accumulation

OSU NLP Group (Ohio State University)

graph-rag / Hippocampal-inspired KG with Personalized PageRank

Kingjulio8238

graph-rag / Knowledge graph + Llama-Index

GoodAI

hybrid / Long-term + short-term + episodic triad

zjunlp (Zhejiang University)

knowledge-base / Action-knowledge base + self-learning

IBM Research

external-memory-network / Brain-inspired distributed episodic memory

UCSD / Apple (Wang et al.)

external-memory-network / Fixed-size latent memory pool updated in-place

Shanghai AI Lab / MMLab (Wu et al.)

agentic-workflow / Skill library + long-term memory + tool discovery

CrewAI Inc.

agentic-workflow / role-based multi-agent orchestration

CraftJarvis

episodic-buffer / Multimodal memory for open-world planning

Tsinghua University (Zhao et al.)

agentic-workflow / Natural-language insight extraction from training trajectories

WithFeeling.AI

hierarchical-summary / Memory-to-Understanding Model (M2U)

Cisco Research / independent (Kynoch & Latapie)

hybrid / Graph + vector with temporal belief updating

Kindroid

hierarchical-summary / Five-Layer Cascaded Memory

UCSB / Microsoft Research

external-memory-network / Decoupled frozen encoder + residual side network

Institute of Software, Chinese Academy of Sciences

vector-rag / Ebbinghaus-curve forgetting mechanism

Fudan University (Li & Qiu)

agentic-workflow / Pre-thought externalized memory

NVIDIA / Caltech / UT Austin / Stanford / ASU / UW (Wang et al.)

agentic-workflow / Ever-growing code skill library + curriculum

Stanford / Google

hierarchical-summary / Memory stream + reflection tree + planning

Stanford University / Google Research

agentic-workflow / Memory stream + reflection tree + planning

Northeastern / MIT / Princeton (Shinn et al.)

agentic-workflow / Verbal reinforcement via episodic reflection buffer

Yohei Nakajima

agentic-workflow / Self-building "functionz" graph

Glimpse AI, Inc.

hierarchical-summary / Identity Core + Multi-Tier Persistent Memory

Google Research (Wu, Rabe, Hutchins, Szegedy)

external-memory-network / Non-differentiable kNN lookup over (key,value) pairs

Heyday (shut down 2025)

vector-rag / Browser-extension passive memory resurface

Personal AI

external-memory-network / Continuous Lifelong Memory Platform

Stanford / Facebook AI Research (Khandelwal et al.)

external-memory-network / Linearly interpolated kNN over LM embedding space

Luka, Inc.

episodic-buffer / Memory Bank + Personality Neural Network