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Reviews onG2CapterraSourceForge
596 reviews tracked

The Bottom Line

Entry price

Free plan available, paid tiers above

Biggest pro

Open source Slack alternative

Biggest con

Less polished than Slack

TL;DR - Mattermost

  • Mattermost is an open-source messaging platform for secure team collaboration
  • It provides channels, threads, and integrations with self-hosting options
  • Free self-hosted, Cloud from $10/user/month
Pricing: Free plan available
Best for: Growing teams
4.3/5 across review platforms

What is Mattermost?

Editorial review
Mattermost provides team messaging you can self-host. Slack alternative for organizations that need data control-chat on your infrastructure. Self-hosting keeps conversations private. The features match commercial alternatives. Enterprise features exist. Organizations needing private team chat choose Mattermost for self-hosted messaging.

Available on: Web, iOS, Android, Windows, macOS, Linux

Pros & Cons

Pros

  • Open source Slack alternative
  • Self-hostable
  • Good for compliance
  • No per-user cloud cost
  • Customizable

Cons

  • Less polished than Slack
  • Smaller integration library
  • Self-hosting required for best value
  • Learning curve
  • Community smaller

Ratings Across the Web

4.3(596 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Team collaborationSelf-hostedChannelsIntegrationsDevOpsOpen source

Pricing Plans

Free Trial

Free

Free

  • Self-hosted
  • Up to 250 users
  • Basic messaging

Professional

$10/user/month

  • AD/LDAP sync
  • SSO
  • Guest accounts

Enterprise

Custom

  • Custom compliance
  • EMM support
  • 24/7 support

How Mattermost's pricing compares

At $10/mo, Mattermost is the most premium of its 4 direct competitors.

Entry paid plan, monthly.

Reviews

4.3/5

Across 596 verified user reviews on G2, Capterra, SourceForge

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Mattermost FAQ

Is Mattermost free?

Mattermost Team Edition is free and open source for unlimited users. Enterprise plans start at $10 per user per month.

What is Mattermost?

Mattermost is a self-hosted team collaboration platform. It's an open source alternative to Slack that you can run on your own servers for complete data control.

Mattermost vs Slack?

Mattermost can be self-hosted giving you data sovereignty. Slack is cloud-only but more polished. Choose Mattermost if you need on-premises deployment or strict compliance.

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