<commit_before># Mattermost is an open source, on-prem Slack-alternative

Mattermost modernizes team communication without locking in your data to a single provider. 

Offer your end users messaging and file sharing across PCs and phones with archiving and instant search--without losing control of your data. 

## All team communication in one place, searchable and accessible anywhere

Please see the [features pages of the Mattermost website](http://www.mattermost.org/features/) for images and further description of the functionality listed below: 

#### Sharing Messaging and Files

- Send messages, comments, files and images across public, private and 1-1 channels
- Personalize notifications for unreads and mentions by channel and keyword<commit_msg>Cosmetic adjustment to title of README<commit_after># Mattermost

Mattermost is an open source, on-prem Slack-alternative. 

It modernizes team communication without locking in your data to a single provider. Offer your end users messaging and file sharing across PCs and phones with archiving and instant search--without losing control of your data. 

## All team communication in one place, searchable and accessible anywhere

Please see the [features pages of the Mattermost website](http://www.mattermost.org/features/) for images and further description of the functionality listed below: 

#### Sharing Messaging and Files

- Send messages, comments, files and images across public, private and 1-1 channels
- Personalize notifications for unreads and mentions by channel and keyword
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