Open-source, self-hostable team messaging for secure operations
Mattermost is an open-source collaboration platform offering channels, threads, calls and playbooks for structured workflows. Organizations can run it on their own servers or in a private cloud to keep full control of their data, which appeals to engineering teams, public agencies and regulated industries. Plugins, webhooks and an API connect it to DevOps tools like GitLab, Jira and Jenkins.
- features
- 6
- alternatives
- 8
- platforms
- 7
- Updated
- Oct 12, 2026
Features
Our take
Pros
- Self-hosting keeps full control over data and infrastructure
- Strong DevOps integrations with GitLab, Jira and Jenkins
- Playbooks structure incident response and repeatable workflows
Cons
- Self-hosted deployments need ongoing admin work
- Smaller app ecosystem than Slack
- Advanced compliance and enterprise features require paid plans
Editorial assessment by the Alternatives.tools team, based on what the product is known for. Not a user review.
Best Mattermost alternatives
See all 8 alternatives
SlackFreemiumChannel-based messaging and collaboration for work teams
4.1(53.5K) · App Store
Rocket.ChatFreemiumOpen sourceOpen-source chat platform for teams and customer conversations
4.4(3.7K) · App Store
ZulipFreemiumOpen sourceOpen-source team chat organized by conversation topics
26Kstars
ElementFreemiumOpen sourceSecure, decentralized messaging built on the Matrix protocol
3.3(590) · App Store
Microsoft TeamsFreemiumChat, meetings and calls inside the Microsoft 365 ecosystem
4.8(3.4M) · App Store
DiscordFreemiumVoice, video and text chat for communities and groups
4.7(3.6M) · App Store
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