"Guidance on Writing Software" matching MCP servers:

Provides read-only access to Hostaway PMS data, enabling assistants to answer questions about listings, calendars, reservations, and inbox threads, and generate occupancy, inbox, and completeness reports without writing or sending anything.

Safely schedule Outlook meetings on on-prem Exchange EWS with room-aware slot suggestions, local credentials, preview-confirmed writes, and audit-friendly lifecycle records.

MCP server for Open-Xchange & standards-based mail: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts, free/busy.

Enables interaction with Feishu (Lark) via MCP for sending messages, managing calendar events, searching documents, and reading/writing bitable records.

Forked from https://github.com/epaproditus/google-workspace-mcp-server The deletion and updates on Google Calendar were removed since there were no scope to prevent deletion whilst maintaining creation capabilities.

Enables managing calendars, tasks, and contacts on an existing Radicale CalDAV/CardDAV server via MCP.

A local MCP server that lets AI assistants access Gmail, Drive, Docs, and Calendar across multiple Google accounts, routing each request by a human-readable account alias. It supports reading, searching, and writing with per-account tagging while keeping OAuth credentials secure and separate.

Comprehensive MCP server for local Microsoft Outlook automation, providing 64 tools across email, calendar, contacts, tasks, notes, and Exchange features on both Windows and macOS.

MCP server for email + calendar via classic Outlook on Windows (COM automation). No Azure app registration, no OAuth — it just drives the Outlook desktop client you're already signed into.

Provides local MCP access to Apple Calendar and Reminders on macOS, with no HTTP, LAN, or cloud endpoints.

Provides read-only access to classic desktop Outlook mailbox and calendar on Windows, enabling safe email and calendar queries without any write capabilities.

Enables natural language access to Microsoft 365 data by providing tools for reading and writing emails, calendar events, contacts, tasks, files, Teams meeting recordings and transcripts, and mailbox settings over the Model Context Protocol.

Enables reading and writing Google Tasks checklist items through the Google Tasks API, including listing task lists and tasks, and creating, updating, completing, or deleting tasks.

An MCP server for managing kids' sports activities on Spond. Built for parents who want to give AI assistants access to upcoming matches, training schedules, and attendance.

Enables ChatGPT to interact with Apple Reminders on your Mac through a secure local agent, providing tools to search, create, complete, and update reminders.

Enables DeepSeek Harness agents to operate Feishu/Lark through the official OpenAPI MCP subprocess using app credentials, exposing tools for sending IM messages, reading and writing Bitable tables, and managing docs, calendar, and drive files. A web settings panel configures credentials, tests connectivity, and lists discovered tools.

Integrates with Apple apps on macOS to enable AI-powered automation of Messages, Notes, Contacts, Mail, Reminders, Calendar, and Maps.

MCP server for Apple Calendar, Mail, Reminders, and Files on macOS using native frameworks.

Enables CRUD operations for calendar events, journal entries, and todos on any CalDAV server (like Radicale) through the Model Communication Protocol.

Enables reading and writing Samsung Reminder data locally, providing tools to list, create, update, delete, and manage reminders and categories via Samsung Cloud.