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)
Mattermost message actions menu
Full Mattermost desktop workspace showing a channel conversation with the message actions menu for replying, copying a permalink, or pinning a post.
Wikimedia Commons · Gmoran6 via Wikimedia Commons (CC BY-SA 4.0)
Nearest matches
Alternatives to Mattermost
Capabilities guide the alternatives
Shared capabilities carry the most weight. Common use cases and categories come next, then audience, platform, deployment, integrations, pricing, and resource fit refine the order.
- Public and private channels
- Direct messaging
- Conversation threads
- File sharing
- Full-text search
- Audio calls
- Screen sharing
- Workflow playbooks
- Custom notifications
- Self-hosted deployment
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At a glance
The source product and its three nearest reviewed alternatives.
Supported; Not supported or offered; “Not applicable” means the capability does not meaningfully apply.
| Attribute | Mattermost |  Slack |  Discord |  Teams |
|---|---|---|---|---|
| License | AGPL-3.0 | Proprietary | Proprietary | Proprietary |
| Pricing | Freemium | Freemium | Freemium | Freemium |
| Platforms | Desktop, Web | Web, Windows, macOS, Linux, Android, iOS | Web, Windows, macOS, Linux, Android, iOS | Web, Windows, macOS, Linux, Android, iOS |
| Offline support | Not available | Limited or unavailable | Limited or unavailable | Limited or unavailable |
| Self-hosting | Supported | Not offered | Not offered | Not offered |
| Privacy | Not applicable | Cloud service policy applies | Cloud service policy applies | Cloud service policy applies |
| API | Not applicable | Public API | Limited or plugin-based | Public API |
Reviewed attributes
Facts, inference, and editorial assessment are labelled separately with confidence and review dates.
| Attribute | Value | Basis | Reviewed |
|---|---|---|---|
| License | AGPL-3.0 | editorial · medium | 2026-08-20 |
| Pricing | Freemium | editorial · medium | 2026-08-20 |
| Platforms | Desktop, Web | editorial · medium | 2026-08-20 |
| Privacy | Not applicable | editorial · low |
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