Mattermost

Name: Mattermost
Brand: Mattermost
Price: 10 USD
Rating: 4.3 (596 reviews)

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Open-source team collaboration platform

Communication Team Chat Internal Comms

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4.3(596 across the web)

FreemiumVisit Website

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

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourcemattermost.com ↗

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)

SourceForge67 reviews

4.3/5

Ratings aggregated from independent review platforms. Learn more

Key Features

Team collaborationSelf-hostedChannelsIntegrationsDevOpsOpen source

Pricing Plans

Free Trial

Pricing checked Jul 11, 2026

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

Calculate your cost View full pricing

How Mattermost's pricing compares

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

$2.5

$6.25

$8.75

Mattermost

$10

Entry paid plan, monthly. Pricing checked Jul 11, 2026.

Reviews

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4.3/5

Across 596 verified user reviews on G2, Capterra, SourceForge

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Best Mattermost Alternatives

Top alternatives based on features, pricing, and user needs.

View full list →

SlackFreemium

Central hub for workplace communication and collaboration

4.5

Microsoft TeamsFreemium

Unite chat, meetings, and files with Microsoft 365

4.4

ZoomFreemium

Connect, communicate, and collaborate with HD video meetings

4.5

DiscordFreemium

Your place to talk and hang out

4.4

NextcloudFreemium

Open source content collaboration platform for secure, self-hosted data control and remote teamwork.

4.5

Troop MessengerFreemium

AI-first team collaboration and instant messaging app for enterprises.

4.7

See all communication tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All Mattermost alternatives6+ tools ranked, pricing + verdict per pick Mattermost vs SlackHead-to-head: features, pricing, who wins Mattermost vs Microsoft TeamsHead-to-head: features, pricing, who wins Mattermost vs ZoomHead-to-head: features, pricing, who wins

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Mattermost FAQ

How does Mattermost ensure data privacy for team communications?

Mattermost ensures data privacy by allowing organizations to self-host their team messaging, keeping conversations on their own infrastructure. This self-hosting capability is a key feature for organizations that require strict data control and compliance.

Which teams benefit most from using Mattermost?

Teams that prioritize data control, compliance, and the ability to self-host their communication platform benefit most from Mattermost. It is particularly well-suited for organizations that need private team chat and want to avoid per-user cloud costs.

How is Mattermost priced?

Mattermost is available on a free tier, providing basic functionality for teams. For organizations requiring more extensive usage and advanced features, paid plans are offered.

Can Mattermost be customized to fit specific organizational needs?

Yes, Mattermost is highly customizable due to its open-source nature. This allows organizations to tailor the platform to their specific workflows and requirements, which is a significant advantage for those needing bespoke solutions.

What kind of trade-offs should users consider when choosing Mattermost over a competitor like Slack?

When choosing Mattermost over a competitor like Slack, users should consider that Mattermost may be less polished and has a smaller integration library. Additionally, self-hosting, while offering data control, requires a learning curve and a smaller community for support.

Does Mattermost support enterprise-level features?

Yes, Mattermost includes enterprise features designed to meet the demands of larger organizations. These features support advanced use cases for businesses requiring robust team collaboration tools.

Source: mattermost.com

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