"Free PostgreSQL Database Solutions" matching MCP servers:

Enables Claude to interact with Hudu IT documentation, including searching, reading, creating, and updating articles, assets, passwords, companies, and more.

Enables AI clients to document a code repository inside an Obsidian vault, capturing tasks, incidents, feature guides, architecture decisions, and release notes with per-claim evidence and cited sources. It reads the repo read-only through a configurable allowlist and previews every change before a single-use confirmation code applies it.

A personal notes MCP server that allows AI assistants to create, search, edit, and manage notes stored in a local SQLite database.

Self-hosted MCP server for Obsidian with semantic + full-text search over PostgreSQL/pgvector, wikilink graph traversal, atomic note CRUD, OAuth 2.0, and a self-describing vault guide.

Enables AI assistants to read Tic lists, tasks, and task images through read-only database queries.

Enables MCP clients to interact with CalDAV calendars, letting users view schedules, find free time, create and update events, manage tasks and dated notes, and respond to invitations on their own server.

A self-hosted MCP server that gives AI agents shared, long-term memory over a git-backed folder of markdown, enabling persistent knowledge search, read, and write without a database.

Enables AI agents to read, create, search, update, delete, and restore Windows Sticky Notes directly through the native UWP SQLite database. Also supports theme color management, desktop window control, trash recovery, and batch export to Markdown or JSON.

An MCP server for Notion API with optimized token efficiency and full database property filtering, enabling AI assistants to manage pages, databases, and blocks.

A persistent memory layer for Claude Desktop that enables semantic search across your entire Obsidian vault using local embeddings and PostgreSQL + pgvector.

Enables AI coding agents to share a persistent, git-backed team memory, automatically committing and syncing decisions, solutions, gotchas, statuses, and handoffs across projects and MCP clients.

Exposes SQLite database query tools and markdown document resources over JSON-RPC 2.0 stdio transport, enabling AI assistants to read and search documents and execute read-only SQL queries.

A local, zero-cost MCP server that fact-checks your Markdown/Obsidian notes using a local LLM (via Ollama) and free sources like Wikipedia and DuckDuckGo, with no cloud API or API keys.

Self-maintaining personal knowledge database — MCP server with figure-level search, auto-wikilinks, and Ebbinghaus-based memory compression

A hybrid MCP server that reads UpNote notes from the local SQLite database (returns actual text) and writes/opens notes via the upnote:// URL scheme, enabling search, retrieval, creation, and navigation of notes.

Enhanced Notion MCP server supporting all 24 property types, auto-pagination, block operations, and markdown conversion for database and page operations.

This is an MCP server that enables agents to record, search, and retrieve memos using LowDB as a lightweight local database.

Enables AI assistants to create, read, update, and manage SiYuan notes, supporting notebook management, document operations, block editing, database attribute views, search, file operations, and export.

Enables natural language interaction with Notion workspace, including search, page/database management, markdown conversion, and productivity shortcuts.

MCP server with 23 tools for full Notion integration, enabling database, page, block, user, search, comment, template, and duplication operations through natural language.