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Slack vs Mattermost

A detailed comparison to help you choose the right tool for your needs.

Slack logo

Slack

Communication

Try Slack
VS
Mattermost logo

Mattermost

Communication

Try Mattermost

A
About Slack

Slack is a channel-based messaging platform that serves as a digital headquarters for teams and organizations. It organizes conversations into channels by topic, project, or team, making it easy to find and follow relevant discussions without wading through unrelated messages. The platform supports direct messaging, voice and video calls, file sharing, and an extensive app ecosystem with thousands of integrations. It's used by everyone from small startups to Fortune 500 companies, and its search functionality makes it straightforward to retrieve past conversations and shared files. While it started as a tool for tech teams, Slack has become a standard communication hub across virtually every industry.

B
About Mattermost

Mattermost is an open-source messaging platform designed as a self-hosted alternative to Slack and Microsoft Teams. It offers real-time chat organized into channels, direct messaging, file sharing, and robust search capabilities, with a strong emphasis on security and data control. The platform is particularly popular among software development teams because of its deep integrations with DevOps tools and its extensible plugin architecture. Organizations in regulated industries like government, healthcare, and finance often choose Mattermost because they can host it on their own infrastructure, maintaining full control over sensitive communications.

Pricing Comparison

Tool
Slack
Mattermost
Price
Free — From $6.67/user/mo
Free — From $10/user/mo
Category
Communication
Communication
Rating
4.3 (169)
4.3 (8)
Free Plan
Yes
No
Integrations
8+ apps
8+ apps
Founded
2013
2015

Feature Comparison

Feature
Slack
Mattermost
Real-time messaging and notifications
File sharing and collaboration tools
Customizable channels for discussions
Integration with third-party apps
Searchable message history
Video and voice call capabilities
Self-hosted deployment options
Threaded conversations for clarity
Customizable user interface themes
Integrations with popular tools
File sharing and collaboration
Advanced search functionality

Choose Slack

Slack is a powerful communication tool that streamlines team collaboration.

Try Slack Free

Read full review

Choose Mattermost

Mattermost is an open-source communication platform for teams, enhancing collaboration and productivity.

Try Mattermost Free

Read full review

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Score Comparison

Ease of Use
8.0
6.0
Features
9.0
8.0
Pricing
7.0
7.0
Support
8.0
6.0
Integrations
9.0
7.0
Overall
8.2
6.8
SlackMattermost

Our Verdict

SlackWinner

Your medium-sized team prioritizes streamlined communication and collaboration in a familiar interface.

Easier to get started
More features
Better support
Mattermost

Your team needs an open-source solution for enhanced collaboration and has technical expertise.

Slack vs Mattermost: The Bottom Line

Both Slack and Mattermost are strong communication tools, but they serve different needs. Both have similar user ratings (4.3). On pricing, Slack is more affordable starting at $0/mo.

Still unsure? Check the full reviews for Slack and Mattermost, explore Slack alternatives, or use our AI search to describe exactly what you need.

Frequently Asked Questions

Is Slack or Mattermost better?

It depends on your needs. Slack (4.3★) is free to start, while Mattermost (4.3★) is from $10/mo. Mattermost has a higher user rating.

Can I switch from Slack to Mattermost?

Yes. Most SaaS tools offer data export features. Check if Mattermost has a migration guide or import tool specifically for Slack users. Many offer onboarding assistance for switchers.

Which is cheaper, Slack or Mattermost?

Slack starts at $0/mo, which is cheaper than Mattermost at $10/mo. Slack also offers a free plan.

What are the main differences between Slack and Mattermost?

Slack focuses on real-time messaging and notifications and file sharing and collaboration tools, while Mattermost emphasizes self-hosted deployment options and real-time messaging and notifications. Both are in the Communication category but serve slightly different use cases.