* MM-14412: Enables force removals of team/channel members base on group constraints. * Renames some existing methods and variables. * Change return types to ChannelMembers and TeamMembers for some existing methods. * Adds option to change LDAP_DATA to either 'qa' or 'test' with env variable. * Adds methods to retrieve ChannelMembers and TeamMembers that, based on group constraints, should be deleted. * Adds helper functions to create GroupTeams and GroupChannels. * MM-14412: Switches to helper methods for GroupSyncable creation in test files. * MM-14412: Style fix. * MM-14412: Switches remaining GroupSyncable instances to be created with helper functions. * MM-14412: Typo fix. * MM-11412: Build fixes. * MM-14412: Checks if user is team member before re-adding. * MM-14412: Update for change of GroupConstrained fields type.
Mattermost is an open source, private cloud, Slack-alternative from https://mattermost.org.
It's written in Golang and React and runs as a single Linux binary with MySQL or PostgreSQL. Every month on the 16th a new compiled version is released under an MIT license.
Try out Mattermost
- Join the Mattermost Contributor's server (latest nightly builds, unstable)
- Join the Mattermost Demo server (latest stable version)
Deploy on Heroku
Note: Heroku preview does not include email or persistent storage
Deploy on a Cloud Platform via Bitnami
Auto-deploy Mattermost to Amazon Web Services, Azure, Google Cloud Platform, or Oracle Cloud Platform via Bitnami.
Install on Your Own Machine
- One-line Docker Preview
- Developer Machine Setup
- Production Install Guides using Linux Binary
- Production Docker Install
Native Mobile and Desktop Apps
In addition to the web interface, you can also download Mattermost clients for Android, iOS, Windows PC, Mac OSX, and Linux.
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Receive notifications of critical security updates. The sophistication of online attackers is perpetually increasing. If you are deploying Mattermost it is highly recommended you subscribe to the Mattermost Security Bulletin mailing list for updates on critical security releases.
Get Involved
- Contribute Code
- Find "Help Wanted" projects
- Join Developer Discussion on a Mattermost Server for contributors
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Learn More
- API Options - webhooks, slash commands, drivers and web service
- See who's using Mattermost
- Browse over 700 Mattermost integrations
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- Email - Subscribe to our newsletter (1 or 2 per month)
- IRC - Join the #matterbridge channel on Freenode (thanks to matterircd)
Any other questions, mail us at info@mattermost.com. We’d love to meet you!





