🧠 AI Memory Systems — Feature Comparison

Markdown GitHub
✅ = has feature— = not documented  |  green = best value in column |  70 systems · sources linked · PR corrections welcome
SystemDescriptionVital SignsArchitectureData ModelSearch & RetrievalKnowledge LifecycleExtraction PipelinePlatform SupportBenchmarks (published)
70 systemsStarsLanguageLicenseSingle binaryCreatedCoverageDeploymentStorageIntegrationProxyWeb/TUIOfflineMulti-agentLLM providersCache optimizationProcedural memorySandboxed execScheduled/autonomousPrivacy/encryptData exportSetupPricingStorage unitEntitiesActionsKeywords/tagsAnticipated queriesTrigger rulesDomain tagTask typeContext (why)Source attributionOrigin + trustEmotionalConflict surfacingLayered memoryTime-travelSchema fieldsFull-textSemantic/vectorHybrid (BM25+Vec)Deep (incl. thinking)Code graphDocs searchFact metadata queryTimeline viewSearch modesData sourcesDecay/forgettingSupersede/replaceContradiction detectQuarantineAuto-resolutionTrust modelExplicit forgetAuto-extractionContent-aware preprocDeduplicationQuality refinementNarrative generationClusteringRecurrence detectionPersona extractionClaude CodeCodexOpenCodeGemini CLICopilotCursorWindsurfOpenClawHermespi/ompAntigravityLoCoMoLongMemEvalPersonaMemToken reductionMethodology open
📋 MarsNMe⭐5 · 2026-03MCP memory gateway, own Supabase, TTL decay, supersede chains, 5+ platforms5JavaScriptMIT—2026-0325%MCP serverSupabase+pgvectorMCP————1————✅—npm installfreeMemory entry (28 fields)———————✅✅——✅——28—✅——————25✅✅✅✅——✅——✅—————✅————✅—✅✅———————
📋 gitmem⭐8 · 2026-04MCP server, BM25+semantic, 17 schema fields, keywords, local-first8TypeScriptMIT—2026-0417%MCP server (npx).gitmem/ + SupabaseMCP——✅—1————✅—npx installfreeLearning entry——✅———————————17✅✅——————21——————✅————————✅✅———✅✅—————————
📋 YesMem⭐10 · 2026-04-09Project continuity layer with deepest data model and proxy collapse10GoApache 2.0✅2026-04-0987%Local binarySQLite+VectorProxy+MCP+Hooks✅—✅✅4✅✅✅✅✅✅curl | bashfreeLearning V2 (structured)✅✅✅✅✅✅✅✅✅✅✅✅—✅51✅✅✅✅✅✅✅✅94✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅——————✅✅0.87——~30% proxy✅
📋 VIR⭐14 · 2026-04Obsidian-native LLM Wiki: retroactive Claude Code session distillation, MCP+CLI daemon, confidence-scored markdown notes14TypeScriptMIT—2026-0435%Local CLI (npm)SQLite + Markdown vaultMCP + Hooks + CLI——✅—2✅✅—✅—✅npm install -gfreeTyped markdown note (pattern/gotcha/decision/tool)————————✅✅—✅——8✅✅—————✅32—✅✅——✅✅✅✅✅✅✅———✅———————————————
📋 Fullerenes⭐19 · 2026-04-25Zero-LLM Tree-sitter code graph, blast radius analysis, 64% SWE-bench token reduction19TypeScriptMIT—2026-04-2515%Local CLI + MCPSQLite (graph.db)MCP——✅—0——————npm installfreeCode symbol node✅—————————————8✅———✅———91———————✅———————✅✅———✅————————64%✅
📋 fidelis⭐20 · 2026-03Non-LLM agent memory, BM25 + rerank, 83.2% R@1 on LongMemEval-S, depends on mem020PythonMIT—2026-0310%MCP server + hooksBM25+ChromaDBMCP + hooks——✅—1————✅—pip installfreeVerbatim passage——————————————3✅✅——————21———————————————✅———————————83.2% R@1——✅
📋 Origin⭐31 · 2026-04-19Local-first Rust daemon with git-versioned memories, distilled wiki pages, and knowledge graph31RustApache 2.0—2026-04-1963%Local daemonlibSQL+FTS5MCP+CC plugin——✅—2—✅—✅✅✅npx setupfreeMemory + Page✅—✅————✅✅✅—✅✅✅40✅✅✅———✅✅33✅✅✅✅✅✅✅✅✅✅✅✅✅—✅✅✅—✅✅✅—————70.093.6——✅
📋 Continuity v2⭐32 · 2026-04SSE proxy for Claude Code, FTS5+ANN search, compaction hooks, thread recall via BFS graph32PythonMIT—2026-0413%Local proxy+MCPSQLite+FTS5+sqlite-vecProxy+MCP+Hooks✅—✅—1——————pip installfreeSession entry—————————————✅6✅✅——————22———————✅————✅——✅———————————————
📋 ArcRift⭐75 · 2026-04Local persistent memory layer, Chrome extension + MCP, sqlite-vec RAG75TypeScriptMIT—2026-0427%Local server + Chrome extsqlite-vecMCP + browser—✅✅—1————✅—?freeMemory entry✅—✅————✅——————7✅✅✅—————32—✅————✅✅—✅—————✅————✅✅—————————
📋 second-brain⭐91 · 2026-05-17Serverless Cloudflare memory, time-decay reranking, smart merge LLM, one-click deploy91TypeScriptMIT—2026-05-1723%Cloudflare WorkersD1+VectorizeMCP—✅——1————✅—one-click deployfreeMemory entry (8 fields)——✅—————✅—————8—✅——————41✅✅✅—✅—✅——✅✅————✅————✅——————————
📋 CommonGround⭐137 · 2025-11Shared agent workspace: collaborative memory, pub/sub events, agent directory137TypeScriptMIT—2025-118%Self-hostedSQLite+VectorREST+WebSocket—✅✅✅1——————docker composefreeShared memory entry——————————————4✅✅——————21———————————————————————————————
📋 omega-memory⭐148 · 2026-0128-tool multi-agent memory, 5 search modes, all lifecycle features, LongMemEval 76.8%148PythonMIT—2026-0143%Local serverSQLite+VectorMCP——✅✅1——————pip installfreeMemory entry (15 fields)——————————————15✅✅✅—————51✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅✅—✅—✅✅—————76.8——✅
📋 AIPass⭐158 · 2026-02CLI-native agent workspace, ChromaDB, auto-rollover, no delete158PythonMIT—2026-0228%Local CLIChromaDB+JSONCLI——✅—1————✅✅pip installfreeDocument entry (10 metadata fields)————————————✅✅10—✅—————✅31✅✅—————✅✅✅✅✅——✅✅✅——————————————
📋 Mengram⭐171 · 2026-02-103-tier memory (semantic/episodic/procedural), 30 MCP tools, experience-driven procedure evolution171PythonApache 2.0—2026-02-1037%Cloud/Self-hostedPostgreSQL+pgvectorMCP+Hooks——✅—1—✅—✅——pip installfreeMemory (3 tiers, 26 fields)✅—✅—✅——✅——✅—✅—26✅✅✅—————41—✅✅———✅✅—✅—————✅✅———✅✅✅————————
📋 ClawMem⭐177 · 2026-02-06On-device, hybrid BM25+vector+RRF+cross-encoder, 5+ search modes, conflict detection177TypeScriptMIT—2026-02-0638%Local server (Bun)SQLite+FTS5+VectorHooks + MCP——✅—1————✅✅bun installfreeMemory entry (12+ fields)✅✅✅———✅✅✅——✅—✅12✅✅✅————✅53✅✅————✅✅—✅—————✅——————✅✅———————
📋 shodh-memory⭐215 · 2025-12-03Cognitive: learns from use, forgets irrelevant, TinyBERT NER, RichContext215Rust?✅2025-12-0332%Local binaryTantivy+FTS5+VectorMCP——✅✅1————✅—cargo installfreeCognitive entry✅——————✅✅—✅—✅—6✅✅✅———✅—11✅—————✅✅—✅—————✅————✅——————————
📋 YourMemory⭐231 · 2026-03-02Self-hosted MCP server, Ebbinghaus forgetting, NER+graph, LoCoMo 59%/LongMemEval 89.4%231PythonCC BY-NC 4.0—2026-03-0228%Self-hosted MCPDuckDB/SQLite+pgvectorMCP——✅—1————✅—pip installfreeMemory entry (12-14 fields)✅—✅————✅——————12✅✅✅—————41✅✅✅——————✅—————✅—✅——✅✅————59.089.4——✅
📋 memanto⭐233 · 2026-03Vector-only (no graph), 13 memory types, 5 search modes, LoCoMo 87.1% SOTA233PythonMIT—2026-0328%Local/CloudVector DBMCP+SaaS——✅—1——————pip installfreemiumMemory (13 types)————————✅————✅6—✅—————✅51—✅—————✅———————✅✅✅✅✅✅✅✅✅——87.189.8——✅
📋 MoltBrain⭐250 · 2026-01-26Long-term memory, MoltBook multi-agent, web viewer, ChromaDB250TypeScript?—2026-01-2620%PluginChromaDB+SQLitePlugin+MCP—✅✅✅1————✅—npm installfreeObservation (17 fields)—————————————✅17✅✅—————✅21———————✅———✅———✅——————✅————————
📋 MemLayer⭐275 · 2025-11-163-line LTM for any LLM: hybrid vector+graph, 3 speed tiers, salience gating, offline mode275PythonMIT—2025-11-1615%Python libraryChromaDB+NetworkXLibrary (3 lines)——✅—5————✅—pip install memlayerfreeMemory fact✅—————————————6✅✅✅—————31✅——————✅—✅—————————————————————
📋 icarus⭐285 · 2026-03-24Provenance, rollback, 3-layer: working+session+wiki, 23 schema fields285PythonMIT—2026-03-2418%Local PythonMarkdown wiki + archiveMCP——✅—1————✅—pip installfreeWorking + session + wiki layers————————————✅✅23✅✅✅—————41—✅————✅————————✅————✅——————————
📋 Memory Palace⭐301 · 2026-02-19Forgetting engine, snapshot rollback, intent-aware search, 4 maintenance engines301PythonMIT—2026-02-1933%Docker / local PythonSQLite+sqlite-vecMCP+Skills—✅✅—1——————docker composefreeMemory entry————✅———————✅✅8✅✅✅—————31✅—————✅——✅——✅——✅✅✅✅—✅✅———✅————✅
📋 Octopoda-OS⭐337 · 2026-04-02Memory OS: loop detection, agent messaging, crash recovery, 29 MCP tools337PythonMIT—2026-04-0215%Local serverKey-value storeMCP—✅✅—1—————✅pip installfreeMemory entry——————————————5—✅——————31——————✅✅—✅—————✅——————✅————————
📋 ai-memory⭐387 · 2026-05-21Git-versioned markdown wiki, zero LLM mode, cross-agent handoffs387RustMIT✅2026-05-2132%Local binaryGit wiki (md)MCP+Hooks—✅✅—1——————?freeWiki page (md)————————————✅✅10✅✅——————31✅✅—————✅———✅———✅✅✅✅—✅—✅—✅✅—————
📋 Memora⭐407 · 2025-11-11MCP memory: hybrid RRF, auto-hierarchy, LLM dedup, live graph UI, event-driven multi-agent407PythonMIT—2025-11-1127%MCP serverSQLite+FTS5MCP—✅✅✅2————✅—pip installfreeMemory entry (hierarchical)——✅———————————8✅✅✅————✅41—✅✅———✅—✅✅—————✅✅——————————————
📋 memorix⭐433 · 2026-02-14Generic vector-store SDK wrapping FAISS/Qdrant — NOT agent memory433PythonApache 2.0—2026-02-147%Python libraryFAISS/QdrantPython SDK——✅—1——————pip installfreeVector entry——————————————6—✅——————21—✅————✅————————————————————————
📋 TeleMem⭐461 · 2026-05Mem0 drop-in replacement: semantic dedup, multimodal video, multi-user461PythonMIT—2026-057%LibraryVector DBSDK——✅—1——————pip installfreeMemory entry——————————————7—✅——————11———————✅—✅—————————————————————
📋 context-infra⭐504 · 2026-03-16Memory + rules + skills + scheduled observations504PythonMIT—2026-03-1623%Local PythonMarkdown filesMCP——✅—1✅—————setup_guide.mdfreeContext entry————————————✅—4✅✅——————21———————✅✅—✅✅—✅✅✅—✅——✅——————————
📋 vestige⭐540 · 2026-01-25FSRS-6 spaced repetition, 29 brain modules, 3D dashboard, Rust binary540RustAGPL-3.0✅2026-01-2535%Local binary (22MB)SQLite+FTS5MCP—✅✅—1————✅—cargo installfreeCognitive memory unit✅—✅———————————5✅✅✅✅———✅41✅✅✅——✅✅✅—✅—————✅✅————✅—————————
📋 memoir⭐555 · 2025-08Git-like branch/commit/merge memory, visual explorer, Claude+Codex plugins555PythonApache-2.0—2025-0818%Plugin (Claude Code, Codex)Hierarchical pathsPlugin+CLI—✅✅—1——————pip installfreeHierarchical memory node✅———————————✅✅5✅——————✅21—✅—————✅———————✅✅——————————————
📋 stash⭐703 · 2026-04-24Go binary, 8-stage consolidation pipeline, causal link + hypothesis engine703GoApache 2.0✅2026-04-2433%Local binaryPostgres+pgvectorMCP——✅—1——————go installfreeEpisode + Fact + Context✅——————✅———✅✅—7—✅————✅—11✅———✅—✅✅—✅✅—✅✅—✅—✅——✅✅—————————
📋 MemoMind⭐716 · 2026-03-15GPU-accelerated, 4-way hybrid retrieval, 4600+ entities, web dashboard716Python?—2026-03-1523%Local PythonLocal vector DBMCP—✅✅—1——————pip installfreeMemory entry✅—✅———————————6✅✅✅————✅23—✅————✅✅—✅✅————✅———————————————
📋 Wax⭐745 · 2026-01-20Swift/Metal, Apple Silicon, single-file, sub-ms RAG, EAV entities, hybrid FTS+HNSW745SwiftApache 2.0✅2026-01-2017%Single file (Apple Silicon)Single file (frame container)Library+MCP——✅—1——————swift buildfreeFrame entry✅—————————————6✅✅✅———✅—11———————————————✅————✅✅—————————
📋 opencode-mem⭐793 · 2026-01-10OpenCode plugin, local vector DB, dashboard, dedup, persona extraction793TypeScript?—2026-01-1015%OpenCode pluginLocal vector DBPlugin (OpenCode)—✅✅—1——————npm installfreeVector entry————————✅—————10—✅—————✅31——————✅——✅————✅——✅—————————————
📋 LightMem⭐877 · 2025-05ICLR 2026: lightweight memory-augmented generation with adaptive gating877PythonMIT—2025-053%Research libraryMemory tokens (model)Library——✅—1——————pip installfreeMemory token——————————————3————————11——————————————————————————————✅
📋 token-savior⭐914 · 2026-03-30FTS5+vector hybrid RRF, Tree-sitter code graph, Thompson-sampled persona lattice914PythonMIT—2026-03-3028%MCP serverSQLite+FTS5+sqlite-vecMCP—✅✅—1——————pip installfreeObservation (18+ fields)——————————————14✅✅✅—✅———61✅✅✅✅✅✅✅✅—✅————✅✅—————————————-77%—
📋 mem9⭐1.1k · 2026-01TiDB Cloud backed, hybrid search, multi-agent spaces, conflict resolution, 6 platforms1115TypeScriptApache 2.0—2026-0133%Cloud/Self-hostTiDB CloudMCP+Hooks—✅✅✅3————✅✅npx installfreemiumMemory entry (14 fields)——✅—————✅——✅——14✅✅✅—————31—✅————✅✅———————✅✅✅————✅✅——58.84———✅
📋 nocturne⭐1.2k · 2025-12-25Rollbackable, visual LTM for MCP agents, no vector RAG, 9 MCP clients1151PythonMIT—2025-12-2523%Local MCP serverSQLiteMCP—✅✅—1——————pip installfreeMemory entry————✅————————✅5✅———————11———————————————✅✅✅✅✅✅✅✅——✅—————
📋 LangMem⭐1.5k · 2025-02LangChain memory toolkit — library only, no CLI/plugin, requires API keys1474PythonMIT—2025-023%LibraryPluggable backendsLangChain/LangGraph————1——————pip installfreeMemory namespace——————————————3—✅——————11———————✅———————————————————————
📋 memsearch⭐1.9k · 2025-08Cross-platform semantic memory: hybrid RRF, SHA-256 dedup, 3-layer progressive recall, ONNX bge-m31861PythonApache 2.0—2025-0818%Local CLI+MCPMilvus+MarkdownMCP+CLI——✅—9——————pip installfreeText chunk (no learning abstraction)——————————————9✅✅✅—————31———————✅—✅—————✅✅✅————✅———————✅
📋 mcp-memory-service⭐1.9k · 2024-12-26Persistent memory for AI agent pipelines, REST API + MCP + knowledge graph + auto-consolidation1901PythonApache 2.0—2024-12-2668%Local/Docker/CloudflareSQLite-vec+Cloudflare+MilvusREST(76ep)+MCP+OAuth2+CLI—✅✅✅5✅———✅✅pip installfreeMemory (text+metadata)✅—✅——✅✅✅✅—✅✅—✅28✅✅✅———✅✅76✅✅✅—✅—✅✅✅✅✅✅✅✅—✅✅✅✅✅✅✅✅————86.0% (sess) / 80.4% (turn)——✅
📋 obsidian-mind⭐2.7k · 2026-02-28Obsidian vault template, markdown-native memory, QMD hybrid RRF search2730TypeScriptMIT—2026-02-2822%Obsidian vault + npmMarkdown + QMD/SQLiteCLI + MCP—✅✅—1——————npm installfreeMarkdown note (wiki)——————————————4✅✅——————21———————————————✅✅✅✅✅✅✅✅——✅—————
📋 MemMachine⭐3.1k · 2025-08Agentic retrieval with ChainOfQueryAgent multi-hop, 3-layer memory, Neo4j+PG3094PythonApache 2.0—2025-0832%Server+SDKNeo4j+PostgreSQL+pgvectorMCP+SDK—✅✅✅1————✅—docker composefreeMemory (3 layers)✅——————✅✅———✅—10—✅✅—————21——————✅✅✅✅————✅✅————✅—✅———————✅
📋 Acontext⭐3.5k · 2025-10Agent Skills as a Memory Layer — auto-captures learnings as Markdown skill files, progressive disclosure retrieval3493JS/TS/Go/PythonApache-2.0—2025-1022%Cloud + Docker self-hostPostgreSQL+pgvector+Redis+RabbitMQ+S3SDK+REST—✅✅—3————✅✅curl | shfreemiumSkill file (Markdown)——————✅———————12✅———————44——————✅✅—✅—✅——✅✅——————✅——————~45% tool calls—
📋 MIRIX⭐3.6k · 2025-096-type memory architecture, LoCoMo 85.38% SOTA, 99.9% storage reduction, best extraction pipeline3554PythonMIT—2025-0940%Self-hostedPostgreSQL+pgvectorREST API—✅✅✅1————✅—docker composefreeMemory (6 types)✅✅✅—————✅———✅—10✅✅—————✅61✅✅——✅——✅✅✅✅✅✅✅✅———————————85.38———✅
📋 engram⭐3.9k · 2026-02-16Go binary agent memory with conflict surfacing and TUI3855GoMIT✅2026-02-1638%Local bin / Cloud (opt-in)SQLite+FTS5MCP+Hooks (19)—✅✅—2————✅✅brew installfreeMemory (What/Why/Where/Learned)——✅————✅———✅—✅6✅——————✅42—✅✅———✅——✅—————✅✅✅✅—✅✅——✅✅—————
📋 MemoryBear⭐4.2k · 2025-06Bio-inspired 6-engine memory: perception, graph, hybrid search, Ebbinghaus forgetting, reflection4167PythonApache 2.0—2025-0655%Local serverNeo4j+ElasticsearchREST API+MCP—✅✅✅1————✅✅docker composefreeMemory node (12+ fields)✅—✅————✅✅—✅✅✅✅12✅✅✅✅——✅✅31✅✅✅—✅✅✅✅✅✅✅✅✅—✅———————————————✅
📋 OpenMemory⭐4.2k · 2025-10HMD v2 cognitive engine: 5-sector decay, temporal KG, waypoint graph, document ingestion4167PythonApache 2.0—2025-1025%Self-hostedVector DBREST API+MCP——✅—1————✅—docker composefreeMemory (5 sectors)——————————✅—✅✅13—✅—————✅21✅—————✅————————✅✅——✅✅✅———✅—————
📋 m_flow⭐4.4k · 2026-02Bio-inspired Graph RAG, 4-layer cone, graph-routed path-cost search, LoCoMo 81.8% #14382PythonApache 2.0—2026-0223%Local PythonGraph DBMCP—✅✅—9——————pip installfreeGraph node (4-layer cone)✅———————————✅—8✅✅✅✅————51———————✅—✅—————✅————✅—✅———81.889.0——✅
📋 memory-lancedb-pro⭐4.4k · 2025-11LanceDB plugin: 6-stage hybrid pipeline, Weibull decay, dreaming sidecar, multi-scope4388TypeScriptMIT—2025-1115%OpenClaw pluginLanceDBOpenClaw plugin——✅—1——————npm installfreeMemory entry (L0-L2)————————————✅—17✅✅✅—————31✅——————✅———————✅——————✅————————
📋 TencentDB-AM⭐4.4k · 2026-04-07Mermaid symbolic memory, L0→L3 pyramid, 61% token reduction4408TypeScriptMIT—2026-04-0717%Plugin (OpenClaw)SQLite+sqlite-vecPlugin hooks——✅—1——————?freeAtom/Scenario/Persona————————————✅—12✅✅✅—————11———————✅—✅————✅———————✅✅————76%61%—
📋 Honcho⭐4.5k · 2024-04Memory library for stateful agents, theory-of-mind reasoning, multi-agent capable4455PythonAGPL-3.0—2024-0418%Server + SDKPostgres+pgvectorSDK + REST + MCP—✅✅✅3——————docker composefreeUser-scoped memory✅——————✅——————5✅✅——————31———————✅———✅——✅✅———————————————
📋 ByteRover⭐4.8k · 2025-06-19Context tree with git-like VC, strongest benchmarks (LoCoMo 96.1)4801TypeScriptElastic 2.0—2025-06-1925%Local CLI / CloudSQLite+Context treeMCP+REPL—✅✅—20——————npm install -gfreemiumContext node (tree)——✅——————————✅6✅———————11✅✅—————✅✅✅—————✅✅———✅✅————96.192.8——✅
📋 EverOS⭐5.8k · 2025-10-28Self-evolving agent memory with evaluation framework5790PythonApache 2.0—2025-10-2823%Lib/MCPVector DBMCP——✅—1——————?freeMemory entry——————————————8✅✅✅—————11——————✅✅———✅✅—✅✅——✅—✅—✅———93.0583.00——✅
📋 MemOS⭐9.4k · 2025-10Self-evolving memory OS, L1/L2/L3, MemCubes, time machine, strong benchmarks9449PythonApache 2.0—2025-1027%Cloud/Self-hostNeo4j+Qdrant+RedisAPI+Plugin—✅✅—1——————docker composefreemiumMemCube————————————✅✅19✅✅✅—————31—✅————✅✅✅✅✅———————————✅✅——75.80+40.43%+40.75%35.24%✅
📋 memU⭐13.7k · 2025-09Always-on memory for 24/7 proactive agents, 3-tier layered, LoCoMo 92.09%, 5 modality preprocessing13700PythonMIT—2025-0917%Library+MCPVector DBMCP+SDK——✅—3——————pip installfreeMemoryItem (3 tiers)✅———————————✅—8—✅——————11——————✅✅✅——————✅——————✅———92.09———✅
📋 Memori⭐15k · 2025-07-24Agent-native memory (captures execution, not just conversation)15007PythonApache 2.0—2025-07-2415%Cloud / BYODBCloudSDK/MCP—✅——1——————?freeMemory entry——————————————6✅✅——————11———————✅———————✅————✅—✅✅——81.95——95% fewer✅
📋 hindsight⭐15.1k · 2025-10Self-improving agentic memory, 91.4% LongMemEval, reflect engine, web dashboard15064PythonMIT—2025-1020%SDK/CloudVector+graph+temporalPython API+MCP—✅✅—1——————pip installfreemiumMemory entry✅—✅————✅—————✅7✅✅✅—————41———————✅———————✅———————————91.4——✅
📋 Memvid⭐15.6k · 2025-05-27Single-file memory (.mv2) with Smart Frames and time-travel15583RustApache 2.0—2025-05-2717%Lib/Local fileSingle .mv2 fileSDK——✅—1——————?freeSmart Frame✅—✅—————————✅✅9✅✅✅————✅11——————————————————————————+35% SOTA———✅
📋 Cognee⭐17.6k · 2023-08-16Memory control plane with remember/recall/forget/improve API17578PythonApache 2.0—2023-08-1617%Lib/CloudGraph+VectorAPI+Hooks—✅✅—11——————?freeFact (graph+vec)✅—————————————10✅✅——✅———51——————✅✅———————✅——————✅————————
📋 agentmemory⭐19.4k · 2026-02-2553 MCP tools, 12 hooks, 4-tier lifecycle, 3-way RRF, pi native19418TypeScriptApache 2.0—2026-02-2543%Local server (npm)SQLite (0 external DBs)MCP + Hooks (12)—✅✅✅3————✅✅npm install -gfreeMemory entry (structured, confidence-scored)✅———————————✅—8✅✅✅—————31✅✅————✅✅—✅—————✅✅✅✅✅✅—✅✅✅✅—95.2—92% fewer✅
📋 gbrain⭐19.6k · 2025-07Garry Tan's production agent brain: zero-LLM KG, gap-aware synthesis, PGLite, dream cycle19637TypeScriptMIT—2025-0735%Local (PGLite WASM)PGLite+pgvectorMCP+Hooks—✅✅—1————✅—npx installfreeMemory entry✅——————✅✅——✅✅—12✅✅✅—————21—✅✅———✅✅—✅✅————✅————✅—✅✅———————
📋 Supermemory⭐22.7k · 2024Cloud memory API, hybrid RAG+Memory, #1 benchmarks, Chrome ext+MCP+plugins22743TypeScriptMIT—202447%Cloud (Cloudflare Workers)Hyperdrive (PG)+KV+VectorMCP+API+Plugins—✅——1——————npx install-mcpfreemiumMemory entry (versioned, ~23 fields)✅—✅————✅✅——✅✅✅23✅✅✅—————32✅✅✅—✅—✅✅✅✅✅✅——✅✅—✅——✅✅✅✅——#1 (no score)81.6%———
📋 Letta⭐23k · 2023-10Stateful agent platform, 3-tier memory (core/recall/archival), sleep-time dreaming23028PythonApache-2.0—2023-1020%Server + SDKPostgres + vector + gitSDK + REST—✅✅✅1——————docker composefreeMemory block————————————✅✅10✅✅——————21——————✅✅——————✅✅——————————————✅
📋 OpenViking⭐24.9k · 2026-01-05ByteDance context DB, filesystem paradigm, L0/L1/L2 tiers, LoCoMo 82%24873PythonAGPL-3.0—2026-01-0528%Self-hostedContext DB (filesystem paradigm)API—✅✅—1————✅✅pip installfreeContext node (filesystem tree)———————✅————✅—6✅✅✅—————33———————✅✅✅—————✅✅—————✅✅——82.1——91%✅
📋 Graphiti⭐26.7k · 2024-08-08Temporal knowledge graph engine (powers Zep)26717PythonApache 2.0—2024-08-0825%LibraryGraph DBLibrary——✅—1——————?freeFact (graph node)✅———————————✅✅8✅✅✅—————21—✅————✅✅—✅—✅✅——✅————✅——————————
📋 Nanobot⭐43.3k · 2025-0543.3k star AI agent framework — Dream is one subsystem, NOT dedicated memory43346PythonMIT—2025-0512%Agent frameworkFilesystemAgent loop——✅—1————✅✅pip installfreeDream memory entry———————✅—————✅7————————12———————✅———✅———————————————————
📋 MemPalace⭐53k · 2026-04-05Verbatim storage, palace metaphor, 96.6% LongMemEval raw retrieval53019PythonMIT—2026-04-0515%Local CLIChromaDB (pluggable)CLI + MCP——✅—1————✅—uv tool installfreeVerbatim text (no summarization)✅—————————————5—✅✅—————12———————✅———————✅——✅———————88.996.6——✅
📋 Mem0⭐57k · 2023-06-20Memory-as-a-Service platform with best published benchmarks57026PythonApache 2.0—2023-06-2017%Lib/Self-host/CloudQdrantAPI/SDK—✅——16——————pip installfreemiumMemory (text)✅—————————————7✅✅✅—————11——————✅✅———————✅————✅—————91.694.8——✅
📋 claude-mem⭐79.5k · 2025-08-31Hooks-based observation capture with progressive disclosure79478TypeScriptApache 2.0—2025-08-3127%Local CLISQLite+ChromaHooks (5)—✅✅—1—✅——✅✅npx installfreeObservation (text)——————————————4✅✅—————✅31———————✅———————✅✅✅✅✅✅—✅————————