Mattermost is an open source, self-hosted Slack-alternative

As an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. It’s written in Golang and React and runs as a production-ready Linux binary under an MIT license with either MySQL or Postgres.

Mattermost is:

  • Slack-compatible, not Slack-limited – Mattermost features rival Slack features, and support a superset of Slack’s incoming and outgoing webhook integrations, including compatibility with existing Slack integrations. From your existing Slack teams, you can import users, public channel history and even theme setting colors into Mattermost.

Mattermost mobile experience with comment threads and file sharing

  • Mobile and desktop apps, in addition to web – Use Mattermost from your iOS or Android phones and tablets or with installed apps on Windows, Linux and Mac.

Also see: 10 reasons why Mattermost is better than Slack 

BONUS: Sign-up for the Mattermost Insiders mailing list and we’ll send you an upcoming article on How to integrate over 400 applications to Mattermost–including Jira, Github and Twitter–using Zapier integration.