"ClickHouse: A fast open-source columnar database management system" matching MCP servers:

Fast, read-only MCP server for Notion that reads directly from local SQLite cache, enabling instant access to Notion pages, databases, and users without API calls or rate limits.

A lightweight MCP server for Notion that enables natural language management of pages, databases, and blocks through the current Notion API.

Highly-performant MCP server for Obsidian vaults enabling sub-millisecond retrieval of notes without requiring Obsidian app, supporting Claude Desktop, Claude Code, Cursor, and other MCP clients.

MCP server for summarizing content from Baidu Netdisk, local files, Bilibili, X, and web articles, producing Obsidian notes with bidirectional links and Feishu digests.

Enables AI assistants to manage notebooks, sources, notes, search content, and interact with AI models through Open Notebook.

Gives AI assistants persistent, shared memory using the Zettelkasten method, so they retain corrections, preferences, and decisions across sessions and across tools via local, hybrid search.

MCP server that wraps the Fast Note Sync REST API to enable querying and editing Obsidian vaults via MCP tools.

A secure, open-source Model Context Protocol server for connecting AI agents and apps to Notion. It enables search, read, create, and append operations on Notion pages with audit logging and risk-based security.

Empowers AI assistants with real-world capabilities including note management, Gmail integration, Google Calendar and Tasks management, and Git repository operations through the Model Context Protocol.

Enables saving URLs, local files, plain text, and platform content (WeChat, X, YouTube, PDF, images, audio/video, Telegram) as structured Markdown knowledge cards in an Obsidian vault, with optional AI-powered classification and tagging.

Enables AI assistants to create, update, search, and manage project entities (milestones, stories, tasks, decisions, documents, features) stored as markdown files in Obsidian with automatic relationship tracking and progress overview.

Calendar and task management with kernel-level scraping for robust parsing, and integrates with DocMost wiki as source of truth.

A local MCP server that transforms an Obsidian vault into a structured learning interface through tools for concept extraction and gap analysis. It enables AI agents to generate study plans and align note-taking with implementation projects for a more cohesive learning workflow.

Enables LLMs to read, search, and manage Obsidian vault markdown files, including YAML frontmatter, wikilinks, and graph operations through a secure stateless I/O layer.

Searches Reddit for answers to questions and saves Q&A sessions to Notion.

Enables personal knowledge management through Claude Desktop, allowing users to capture thoughts, connect ideas, and reflect on thinking changes via natural conversation.

A mobile-first AI co-reading MCP server that lets users import novels or comics, sync reading progress with AI, and interact through comments, bookmarks, and notes.

A bridge between LLMs and OpenWebUI workspaces that enables managing projects, notes, and knowledge bases. It supports safe project configuration updates through a propose-evaluate-apply workflow and direct file uploads to knowledge bases.

Enables AI assistants to persistently add, read, and summarize sticky notes through MCP-compliant tools, resources, and prompts.

Reads the local SQLite cache of the Notion desktop app to enable fast, offline search and retrieval of Notion pages from Claude.