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 Suggest and vote on features

Mattermost Features

  1.  Extensible by Plugins/Extensions
  2.  Built-in viewer
  3.  Full-Text Search
  4.  Support for @mentions
  5.  Support for MarkDown
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Mattermost information

Supported Languages

  • English
  • ...

GitHub repository

  •  27,975 Stars
  •  6,819 Forks
  •  851 Open Issues
  •   Updated Apr 14, 2024
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Our users have written 9 comments and reviews about Mattermost, and it has gotten 242 likes

Mattermost was added to AlternativeTo by cnygaard on Jun 24, 2015 and this page was last updated Sep 29, 2022.

Comments and Reviews  Post a comment/review

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Top positive commentAug 24, 2016

GitLab officially integrates Mattermost in its deployment packages. Providing a single sign-on for users of both applications.

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Alexandre ZANNI
Top positive commentApr 8, 2018

It's not a slack alternative, it's far more better. I personally love the native markdown support.

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Top negative commentMay 15, 2020

Trying to post a review ...last one ended up in "comments" section as double post

I would not advise to install it - !!! Software is too simple no image display , no nothing ...but what it does have is a tracking if you try to remove it - server wont start - coz its always connecting to a third party sites:

Avoid this software !!!

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David Newland
Positive commentJun 1, 2022

Mattermost is more developer-friendly than Slack (or at least, when compared to "new Slack", which seems to have gone down the rich text editor route rather than staying true to markdown).

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CommentMay 15, 2020

DO NOT INSTALL THIS SOFTWARE !!! It has tracking build in - and if disabled - chat server wont start

check who they are working with btw :)

US department of defense

right :) ...

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Negative commentOct 1, 2019

Does not support voice (or video for that matter) calls natively; you need a third-party plugin for that. I guess it supports it somehow?

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Negative commentMay 25, 2019

Open source slack knock off. Slack already sucks, this sucks even more, though at least it's more open.

There's no good Linux client. Of the only ones that are actually usable one was a bloated electron monstrosity, the other wants access to create a second account on their own server and feed all your instant messages to them. Lol! Needless to say I ended up using the first one.

All this program is, is a glorified chatroom. IRC does the same thing a million times better, without the onerous account system and the pathetic selection of clients. The chat interface itself is a mess, cluttered with things like dates, needless separators, ugly icons and emojis. One of their "features" is that you can put emojis on people's chat messages, like in Github images. Who the hell needs to pin emojis on chats? Just reply with the emoji if you really have to.

Godawful program, but unfortunately your boss will require to use it. Oh well, at least it's not slack...

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