10 open-source MCP repos that connect your AI agent to Slack, Gmail, Jira and more
victor_explore · x · 2026-10-22
A curated list of 10 open-source GitHub repos (stars checked Oct 2026) that connect AI agents to everyday work apps via MCP:
- MCP Atlassian (6k stars): read/write Jira and Confluence
- Google Workspace MCP (3k stars): Gmail, Drive, Docs, Sheets, Calendar
- Slack MCP Server (2k stars): read channels, DMs, search; zero setup with OAuth
- MCPVault (2k stars): read/write Obsidian notes
- iMCP (2k stars): messages, reminders and calendar on Mac
- Google Calendar MCP (1k stars): free time, conflicts, many accounts
- ms-365-mcp-server (1k stars): Outlook, OneDrive, Excel, To Do
- mcp-google-sheets (1k stars): read, write and share Google Sheets
- Todoist MCP Server (554 stars): add, find and finish Todoist tasks
- mcp-email-server (369 stars): any inbox over IMAP and SMTP
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