# Knowledge and memory MCP servers online

Check the source documentation for each connection.

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

## MCP servers

1. [Beever Atlas](https://mcpdirectory.fyi/ca/global/online/beever-atlas.md), Knowledge and memory, Online: Open-source LLM knowledge base: team chat into a typed knowledge graph and auto-generated wiki.
2. [Claudex](https://mcpdirectory.fyi/ca/global/online/claudex.md), Knowledge and memory, Online: Persistent memory + FTS5 search MCP server for Claude Code conversation history.
3. [Cortex Memory Engine](https://mcpdirectory.fyi/ca/global/online/cortex-memory-engine.md), Knowledge and memory, Online: Local-first AI memory engine — 4-tier memory, people graph, Bayesian beliefs. Encrypted, 62µs.
4. [Vault Cortex](https://mcpdirectory.fyi/ca/global/online/vault-cortex.md), Knowledge and memory, Online: Standalone MCP server for Obsidian vaults — hybrid search, notes & files, memory, tasks, OAuth 2.1
5. [witness](https://mcpdirectory.fyi/ca/global/online/witness.md), Knowledge and memory, Online: Distills your sessions or any text corpus into a dated history of how its subject changed.
6. [Hint Services Obsidian Github Mcp](https://mcpdirectory.fyi/ca/global/online/hint-services-obsidian-github-mcp.md), Knowledge and memory, Online: Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy…
7. [Neurakeep](https://mcpdirectory.fyi/ca/global/online/neurakeep.md), Knowledge and memory, Online: Local-first, source-cited memory for AI agents with proposal review, failure memory, and MCP tools.
8. [Gnosis MCP](https://mcpdirectory.fyi/ca/global/online/gnosis-mcp.md), Knowledge and memory, Online: Zero-config MCP server for searchable documentation. SQLite or PostgreSQL.

## Other categories in Online

- [Developer tools](https://mcpdirectory.fyi/ca/global/online/category/developer-tools.md): 13 MCP servers
- [Productivity and collaboration](https://mcpdirectory.fyi/ca/global/online/category/productivity-collaboration.md): 7 MCP servers
- [Search and research](https://mcpdirectory.fyi/ca/global/online/category/search-research.md): 3 MCP servers
- [Cloud and DevOps](https://mcpdirectory.fyi/ca/global/online/category/cloud-devops.md): 2 MCP servers
- [Finance and crypto](https://mcpdirectory.fyi/ca/global/online/category/finance-crypto.md): 2 MCP servers
- [AI and media generation](https://mcpdirectory.fyi/ca/global/online/category/ai-media-generation.md): 1 MCP server
- [Other tools](https://mcpdirectory.fyi/ca/global/online/category/other-tools.md): 1 MCP server
- [Sales and marketing](https://mcpdirectory.fyi/ca/global/online/category/sales-marketing.md): 1 MCP server
- [Security](https://mcpdirectory.fyi/ca/global/online/category/security.md): 1 MCP server
- [Web and browser automation](https://mcpdirectory.fyi/ca/global/online/category/web-browser-automation.md): 1 MCP server