# Communication MCP servers online

Check the source documentation for each connection.

3 MCP servers. Also on the [web page](https://mcpdirectory.fyi/gb/global/online/category/communication).

## MCP servers

1. [Agent Comms](https://mcpdirectory.fyi/gb/global/online/agent-comms.md), Communication, Online: Cross-harness communication mesh for LLM agents — rooms, DMs, presence, and visibility over TCP
2. [Concord MCP](https://mcpdirectory.fyi/gb/global/online/concord-mcp.md), Developer tools, Online: Cross-harness communication and shared work-state for AI coding agents.
3. [Gmail](https://mcpdirectory.fyi/gb/global/online/gmail-2.md), Communication, Online: Allow AI systems to read, send, archive, and manage emails via Gmail.

## Other categories in Online

- [Developer tools](https://mcpdirectory.fyi/gb/global/online/category/developer-tools.md): 20 MCP servers
- [Search and research](https://mcpdirectory.fyi/gb/global/online/category/search-research.md): 18 MCP servers
- [Knowledge and memory](https://mcpdirectory.fyi/gb/global/online/category/knowledge-memory.md): 14 MCP servers
- [Data and databases](https://mcpdirectory.fyi/gb/global/online/category/data-databases.md): 10 MCP servers
- [Productivity and collaboration](https://mcpdirectory.fyi/gb/global/online/category/productivity-collaboration.md): 10 MCP servers
- [Other tools](https://mcpdirectory.fyi/gb/global/online/category/other-tools.md): 7 MCP servers
- [AI and media generation](https://mcpdirectory.fyi/gb/global/online/category/ai-media-generation.md): 4 MCP servers
- [Sales and marketing](https://mcpdirectory.fyi/gb/global/online/category/sales-marketing.md): 3 MCP servers
- [Security](https://mcpdirectory.fyi/gb/global/online/category/security.md): 3 MCP servers
- [Finance and crypto](https://mcpdirectory.fyi/gb/global/online/category/finance-crypto.md): 2 MCP servers
- [Health and science](https://mcpdirectory.fyi/gb/global/online/category/health-science.md): 2 MCP servers
- [Cloud and DevOps](https://mcpdirectory.fyi/gb/global/online/category/cloud-devops.md): 1 MCP server
- [Web and browser automation](https://mcpdirectory.fyi/gb/global/online/category/web-browser-automation.md): 1 MCP server