Mattermost is a Mac utility that provides the end-users the possibility to communicate with other teams from the same or other organization. It can be considered an alternative to Slack and other SaaS services.
When you start the program, you are first welcomed by a simple interface where you have to type the team name and the URL and log into the account. For each connection, you can set up various configuration settings, depending on your needs. However, the Back button doesn't always work, and navigation through the menu is sometimes laggy.
The tool is supported by many popular communities, such as IRC, XMPP, Giphy, Hubot, Jenkins, GitLab, Trac, Redmine, SVN, or Jira. With Mattermost, the users have full control of the company's IP and customer data, they can share files, images, bookmark favorite channels, or enter the Do Not Disturb mode.
Furthermore, it includes bots and a developer toolkit, has custom slash commands, and comes with an enforced multi-factor authentication.
Briefly said, Mattermost is an important tool for users who work in the IT industry, especially for DevOps because it allows them to connect to multiple team communication servers at the same time.