Mattermost

Secure workplace messaging keeps your team connected without leaving your firewall. Mattermost delivers private, self-hosted communication designed for organizations that prioritize data control and security.

Organize conversations by topic in private groups, one-to-one chats, or team-wide channels. Share images instantly and collaborate without friction. Integrate your existing tools seamlessly—connect in-house systems with webhooks and use Slack-compatible integrations to sync workflows across your stack.

Your data stays yours. No cloud dependency, no third-party servers—just straightforward, reliable messaging infrastructure you manage and trust. Whether coordinating projects, sharing updates, or building team culture, you maintain complete visibility and governance.

Note: This app requires connection to a Mattermost Server v10.11.0 or newer. Older server versions may experience connection issues or unexpected behavior. Start using Mattermost today and take full control of your team's communication.