# Memory MCP Servers > Find MCP servers for persistent memory, knowledge bases, and knowledge graphs. Compare what each stores, retrieves, and requires to run. Canonical: https://www.mcpfolio.com/directory/memory ## Memory MCP servers - [Mem0 MCP](https://www.mcpfolio.com/servers/mem0): Connects AI clients to a hosted Mem0 account for saving, searching, retrieving, updating, and managing user or agent memories. - [Chrome DevTools MCP](https://www.mcpfolio.com/servers/chrome-devtools): Google's Chrome DevTools MCP connects an AI coding agent to a live Chrome browser for browser automation, debugging, network inspection, performance analysis, and related DevTools workflows. - [Knowledge Graph Memory](https://www.mcpfolio.com/servers/knowledge-graph-memory): An official local memory server that persists entities, relations, and observations as a knowledge graph in a JSONL file and exposes graph operations through MCP tools and a resource. - [Qdrant MCP](https://www.mcpfolio.com/servers/qdrant): Qdrant's official local MCP server stores and retrieves text memories using semantic search backed by a Qdrant database or local Qdrant storage. - [DigitalOcean MCP](https://www.mcpfolio.com/servers/digitalocean): DigitalOcean's official suite of separate remote MCP servers exposes product-specific management and documentation tools for its cloud infrastructure and AI platform. - [Lara Translate MCP](https://www.mcpfolio.com/servers/lara-translate): Remote translation MCP for language detection, professional translation, translation memories, and glossaries. - [DuckDB / MotherDuck Local MCP](https://www.mcpfolio.com/servers/motherduck-duckdb): Local MCP server for running DuckDB SQL against in-memory or local databases, S3-hosted databases, and MotherDuck. - [AppsFlyer MCP](https://www.mcpfolio.com/servers/appsflyer): AppsFlyer-operated beta remote MCP server that connects AI clients to permitted AppsFlyer marketing analytics, app settings, audiences, OneLink, and product documentation. - [Augments MCP](https://www.mcpfolio.com/servers/augments): A local MCP server that searches framework documentation, TypeScript API types, examples, changelogs, and migration guidance for npm packages. - [Leni MCP Runtime](https://www.mcpfolio.com/servers/leni): Leni's hosted real-estate intelligence MCP runtime lets a signed-in user query authorized portfolio data, run analysis, and access governed personal or organization context. - [Contextual AI MCP](https://www.mcpfolio.com/servers/contextual-ai): MCP integrations that route questions to Contextual AI agents for retrieval-augmented answers grounded in a configured knowledge base and returned with citations. - [App Optimize API MCP](https://www.mcpfolio.com/servers/google-cloud-app-optimize-api): Google Cloud managed MCP server for App Optimize API. Exact tool names and accessible operations depend on the published server reference and configured Google Cloud permissions. - [Google Search Console MCP (gsc-mcp)](https://www.mcpfolio.com/servers/google-gsc-mcp-florian): Community MCP focused on Google Search Console, with related GA4, CrUX, PageSpeed, indexing, and SEO analysis capabilities. - [Cognee MCP](https://www.mcpfolio.com/servers/cognee-mcp): Cognee's official MCP server exposes a focused memory API for storing, recalling, and forgetting agent memory, with optional code-graph search and other tools discoverable through its tool-search mode. - [Hindsight Memory MCP](https://www.mcpfolio.com/servers/hindsight-memory): Hindsight provides persistent agent memory with semantic, keyword, graph, and temporal retrieval. Its MCP can connect to a local Hindsight service or Hindsight Cloud. - [Memory-Plus](https://www.mcpfolio.com/servers/memory-plus): Community-maintained local RAG memory MCP that records, retrieves, updates, visualizes, imports, and deletes persistent memories for an agent. - [codebase-memory-mcp](https://www.mcpfolio.com/servers/codebase-memory-mcp): A local MCP server that indexes a codebase into a persistent graph for code search, architecture exploration, call-path tracing, and change-impact analysis. - [Fast Filesystem](https://www.mcpfolio.com/servers/fast-filesystem): Provides streaming-based file operations with auto-chunking for memory-efficient handling of large files, including sequential reading, precise line-based editing, batch operations, archive compression, and backup mechanisms with retry logic. - [NotebookLM](https://www.mcpfolio.com/servers/notebooklm): Empower your CLI agents with zero-hallucination answers from your own docs. NotebookLM MCP Server connects AI tools like Claude, Cursor, and Codex directly to Google’s NotebookLM, ensuring every answer is accurate, current, and citation-backed. Skip error-prone manual copy-paste—let your AI assistant research, synthesize, and reference across your documents for confident coding. All queries are grounded in your uploads, eliminating invented APIs or outdated info. Manage notebooks, automate deep research, and achieve seamless collaboration between multiple tools using a shared, always-relevant knowledge base. Spend less time debugging and more time building with trustworthy, source-based answers. - [leapfrog](https://www.mcpfolio.com/servers/leapfrog): Multi-session browser automation MCP server with stealth capabilities, supporting up to 15 parallel sessions with 10x token efficiency compared to traditional browser automation tools. - [Structured Thinking](https://www.mcpfolio.com/servers/structured-thinking): Structures reasoning processes through defined thought stages, managing a history of thoughts with metadata for transparent, step-by-step problem solving and decision making. - [Microsoft 365](https://www.mcpfolio.com/servers/microsoft-365): Provides a bridge between Microsoft 365 services and natural language interfaces, enabling access to email, calendar, OneDrive files, and Excel operations through the Microsoft Graph API with simplified authentication and parameter handling. - [LibSQL Memory](https://www.mcpfolio.com/servers/libsql-memory): Provides a LibSQL-based persistent memory database for storing and retrieving knowledge graph entities and relations across conversations. - [Build Vault](https://www.mcpfolio.com/servers/build-vault): Transforms The Build Podcast into a searchable knowledge base using hybrid vector and full-text search, providing semantic search across business ideas, frameworks, products, and expert insights from podcast episodes with speaker-specific filtering and analytics resources. 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