# Knowledge and memory MCP servers online

Check the source documentation for each connection.

14 MCP servers. Also on the [web page](https://mcpdirectory.fyi/gb/global/online/category/knowledge-memory).

## MCP servers

1. [Alaya Mcp](https://mcpdirectory.fyi/gb/global/online/alaya-mcp.md), Knowledge and memory, Online: Local memory engine for AI agents with knowledge graphs, forgetting, and semantic recall
2. [AsDecided](https://mcpdirectory.fyi/gb/global/online/asdecided.md), Developer tools, Online: Read-only access to deterministic engineering decisions stored in a local repository.
3. [Context Sync](https://mcpdirectory.fyi/gb/global/online/context-sync.md), Knowledge and memory, Online: Universal AI Memory - Sync context across Claude, VsCode, Cursor, Continue, Windsurf, Zed & more
4. [jevmem](https://mcpdirectory.fyi/gb/global/online/jevmem.md), Knowledge and memory, Online: Automatic project memory for Claude Code and Cursor; Codex and Claude Desktop over MCP.
5. [Mneme Decision MCP](https://mcpdirectory.fyi/gb/global/online/mneme-decision-mcp.md), Developer tools, Online: Local MCP server for architectural decisions, traceability, and non-authoritative proposals.
6. [NeuroStack](https://mcpdirectory.fyi/gb/global/online/neurostack.md), Knowledge and memory, Online: Token-efficient MCP memory for Markdown vaults. Tiered search, GraphRAG, AI memories.
7. [PageIndex MCP](https://mcpdirectory.fyi/gb/global/online/pageindex-mcp.md), Knowledge and memory, Online: Reasoning-based RAG system for chatting with long PDFs. Supports local and online files.
8. [Parrot](https://mcpdirectory.fyi/gb/global/online/parrot.md), Productivity and collaboration, Online: Your recorded Mac meetings in Claude: search, promises with owners, follow-ups. Local, read-only.
9. [Reverie](https://mcpdirectory.fyi/gb/global/online/reverie.md), Knowledge and memory, Online: Graph memory that dreams: Neo4j knowledge-graph memory for AI agents with hybrid search
10. [TOMC Memory](https://mcpdirectory.fyi/gb/global/online/tomc-memory.md), Knowledge and memory, Online: CPU task-specific context preparation and explicitly saved local project notes through MCP.
11. [Tribal](https://mcpdirectory.fyi/gb/global/online/tribal.md), Knowledge and memory, Online: Self-hosted semantic memory over MCP for an engineering team's tacit knowledge. Needs Postgres.
12. [Cathedral — Persistent Memory for AI Agents](https://mcpdirectory.fyi/gb/global/online/cathedral-persistent-memory-for-ai-agents.md), Knowledge and memory, Online: Persistent memory and drift detection for AI agents across session restarts.
13. [Hot Memory Mcp](https://mcpdirectory.fyi/gb/global/online/hot-memory-mcp.md), Knowledge and memory, Online: Two-tier memory: hot cache (0ms) + semantic search. Self-organizing.
14. [Notebooklm Mcp Secure](https://mcpdirectory.fyi/gb/global/online/notebooklm-mcp-secure.md), Knowledge and memory, Online: Security-hardened NotebookLM MCP with post-quantum encryption

## Other categories in Online

- [Developer tools](https://mcpdirectory.fyi/gb/global/online/category/developer-tools.md): 20 MCP servers
- [Search and research](https://mcpdirectory.fyi/gb/global/online/category/search-research.md): 18 MCP servers
- [Data and databases](https://mcpdirectory.fyi/gb/global/online/category/data-databases.md): 10 MCP servers
- [Productivity and collaboration](https://mcpdirectory.fyi/gb/global/online/category/productivity-collaboration.md): 10 MCP servers
- [Other tools](https://mcpdirectory.fyi/gb/global/online/category/other-tools.md): 7 MCP servers
- [AI and media generation](https://mcpdirectory.fyi/gb/global/online/category/ai-media-generation.md): 4 MCP servers
- [Communication](https://mcpdirectory.fyi/gb/global/online/category/communication.md): 3 MCP servers
- [Sales and marketing](https://mcpdirectory.fyi/gb/global/online/category/sales-marketing.md): 3 MCP servers
- [Security](https://mcpdirectory.fyi/gb/global/online/category/security.md): 3 MCP servers
- [Finance and crypto](https://mcpdirectory.fyi/gb/global/online/category/finance-crypto.md): 2 MCP servers
- [Health and science](https://mcpdirectory.fyi/gb/global/online/category/health-science.md): 2 MCP servers
- [Cloud and DevOps](https://mcpdirectory.fyi/gb/global/online/category/cloud-devops.md): 1 MCP server
- [Web and browser automation](https://mcpdirectory.fyi/gb/global/online/category/web-browser-automation.md): 1 MCP server