Alternatives

Products that do what Mattermost does

Open source, on-premises, Slack alternative

1
Mattermost 1.0▲219
Open source Slack alternative
2015
2
Matterwiki▲227
A simple, beautiful, and open source wiki for teams
2017
3
Matterhorn▲163
Simple and light-weight project management tool
2015
4
Slack▲85
Be less busy. Real-time messaging, archiving & search.
2014
5
Sortd for Slack▲328
Get Trello-style project boards right in your Slack!
2017
6
StackForest▲173
A curated directory of tools and services for professionals.
2017
7
Matter▲185
A new magazine built on Medium
2014
8
Let's Chat▲321
Like Slack, but opensource and self-hosted.
2015
9
Slinky▲110
Your slack links — organized!
2016
10
Contentful▲108
The API-driven CMS: Manage content once, publish it anywhere
2014
11
Slack Enterprise Grid▲292
Power up every part of your business
2017
12
GitHub Desktop▲252
The New Native
2017
13
Contentify▲70
a real-time collaborative content manager on top of Github
2014
14
Slack Gitsin▲115
A beautiful Slack command line interface
2016
15
Idealist▲202
Keep track of your startup ideas
2015
16
Lighthouse▲144
Real-time monitoring and alerts for Slack administrators
2016
17
Fustr▲144
Discover new startups faster
2017
18
Fosshub▲79
An open source for free and open source tools
2015
19
Agora▲180
Discover the most discussed ideas and issues on Slack 💡
2017
20
Slack for Mobile 2.0▲310
Rebuilt from the ground up
2015
21
SlackCatchup▲134
Catch up all the unread across your Slack teams in one place
2016
22
Slack Overflow▲230
A programmer's best friend, now in Slack.
2015
23
Total.js Messenger▲181
A small, open-source alternative to Slack
2017
24
Feedback Friday by Matter for Slack▲171
Recognize teammates with Kudos, feedback, & rewards in Slack
2021

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