Mattermost
Mattermost is a communication product focused on team messaging.
Official product imagery
Mattermost screenshots
3 official images
Mattermost channel with recent mentions
Full Mattermost desktop workspace showing public channels, a New Features conversation, and the recent mentions panel with a survey-bot direct message.
Wikimedia Commons · Gmoran6 via Wikimedia Commons (CC BY-SA 4.0)
Mattermost emoji picker in a channel
Full Mattermost desktop workspace showing a New Features conversation with the emoji picker open for composing a message.
Wikimedia Commons · Gmoran6 via Wikimedia Commons (CC BY-SA 4.0)
Nearest matches
Alternatives to Mattermost
- • Both are communication products
- • Shared capabilities: Public and private channels, Direct messaging
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- • Both are communication products
- • Shared capabilities: Public and private channels, Direct messaging
Sign in to rate this match.
- • Both are communication products
- • Shared capabilities: Public and private channels, Direct messaging
Sign in to rate this match.
At a glance
The source product and its three nearest reviewed alternatives.
| Attribute | Mattermost |  Slack |  Discord |  Teams |
|---|---|---|---|---|
| API | Not available | Public API | Limited or plugin-based | Public API |
| License | AGPL-3.0 | Proprietary | Proprietary | Proprietary |
| Offline support | Not available | Limited or unavailable | Limited or unavailable | Limited or unavailable |
| Platforms | Desktop, Web | Web, Windows, macOS, Linux, Android, iOS | Web, Windows, macOS, Linux, Android, iOS | Web, Windows, macOS, Linux, Android, iOS |
| Pricing | Freemium | Freemium | Freemium | Freemium |
| Privacy | Not available | Cloud service policy applies | Cloud service policy applies | Cloud service policy applies |
| Self-hosting | Supported | Not available | Not available | Not available |
Reviewed attributes
Facts, inference, and editorial assessment are labelled separately with confidence and review dates.
| Attribute | Value | Basis | Reviewed |
|---|---|---|---|
| API and extensibility | Not available | editorial · low | 2026-08-20 |
| License | AGPL-3.0 | editorial · medium | 2026-08-20 |
| Offline support | Not available | editorial · medium | 2026-08-20 |
| Platforms | Desktop, Web | editorial · medium |
Capabilities
- • Public and private channels
- • Direct messaging
- • Conversation threads
- • File sharing
- • Full-text search
- • Audio calls
- • Screen sharing
- • Workflow playbooks
- • Custom notifications
- • Self-hosted deployment
Common uses
- • Team messaging