# Slack — Slack is a team messaging platform that organizes work in channels for companies of all sizes.
Source: https://maarket.ai/communication-and-meetings/slack
Last updated: 2026-09-19

## Slack at a glance
- Category: Communication & Meetings (https://maarket.ai/category/communication-and-meetings)
- Best for: Startup, SMB, Enterprise
- Agent compatibility: Agent Ready, MCP Native
- Karma Points: 33
- Rank in category: #1
- Community: 2 use this, 2 recommend it, 0 all-time clicks
- Website: https://slack.com
- Pricing: https://slack.com/pricing
- X: https://x.com/SlackHQ

## About Slack
Slack is a team messaging platform that organizes conversations into channels, direct messages and threads. It adds huddles for audio and video calls, canvases and lists for docs and tasks, Workflow Builder for automation, and Slack AI for summaries and search, with thousands of app integrations. It is used by startups, agencies and enterprises as the daily hub for internal communication. Slack is owned by Salesforce, offers a free plan, and provides an official MCP server and search API.

## Alternatives in Communication & Meetings
| Product | Karma Points | Link |
| --- | --- | --- |
| Loom | 33 | https://maarket.ai/communication-and-meetings/loom |
| Zoom | 25 | https://maarket.ai/communication-and-meetings/zoom |
| Calendly | 22 | https://maarket.ai/communication-and-meetings/calendly |

## Frequently asked questions

### What is Slack used for?
Slack is used for team chat in channels, direct messages, audio and video huddles, file sharing and workflow automation, replacing much internal email with searchable conversations.

### Is Slack free?
Yes. The free plan keeps 90 days of message history and allows limited integrations and huddles. Pro, Business+ and Enterprise Grid plans are priced per user and unlock full history and admin tools.

### Slack vs Microsoft Teams: which is better?
Slack has a cleaner chat experience and a larger third-party app ecosystem; Teams is bundled with Microsoft 365 and stronger for video meetings. Teams is cheaper if you already pay for Microsoft 365.

### Does Slack have an API and MCP server?
Yes. Slack offers Web, Events and Socket Mode APIs plus an official MCP server and real-time search API that let AI agents securely read messages and context with user permissions.

### Is Slack agent ready?
Yes — Slack is listed as Agent Ready and MCP Native on Maarket.

### Who is Slack best for?
Slack is listed as a fit for Startup, SMB, Enterprise teams.

### What does Slack do?
Slack is a team messaging platform that organizes work in channels for companies of all sizes.

### What are the alternatives to Slack?
Other Communication & Meetings products on Maarket include Zoom, Loom, Calendly.

### How is Slack ranked on Maarket?
Purely by Karma Points earned from community actions — reviews, recommends, use signals and clicks. There is no pay-to-rank; sponsor placements are always clearly labeled.