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Mattermost vs Slack comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Mattermost
Ranking in Enterprise Social Software
15th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Slack
Ranking in Enterprise Social Software
2nd
Average Rating
8.4
Reviews Sentiment
7.5
Number of Reviews
76
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Enterprise Social Software category, the mindshare of Mattermost is 3.5%, up from 2.5% compared to the previous year. The mindshare of Slack is 13.0%, up from 9.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Social Software
 

Featured Reviews

Use Mattermost?
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Awais Mehmood - PeerSpot reviewer
Automation features and user-friendly interface support seamless communication
Slack is very supportive in terms of communication between my colleagues and clients. While working with the reimbursement feature, I found the automation capabilities on Slack to be incredibly useful, allowing me to automate messages for specific dates or times and even to greet someone on their birthday. I haven't specifically used the channel organization feature of Slack, as I am added to channels, but I use it with Airtable, which automates notifications to a specific Slack channel when a user fills out a form on our website. In my experience, Slack is a stable product for communication, and I appreciate its automation features and integration of AI capabilities for enhancing specific functions.
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858,649 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Educational Organization
59%
Computer Software Company
10%
Financial Services Firm
7%
University
3%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

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What do you like most about Slack?
Nowadays, we don't need to visit an HR portal. Our marketing and human resources teams directly share details about birthdays, upcoming events, and important dates in Slack. Whether it's a training...
What is your experience regarding pricing and costs for Slack?
I am not aware of pricing, setup costs, or licensing, due to my company's partnership with Slack.
What needs improvement with Slack?
Sometimes Slack behaves unexpectedly and shuts down without notification or support communication. There is a need to add a call group feature to facilitate scheduling and conducting meetings withi...
 

Comparisons

 

Overview

 

Sample Customers

Broadridge, Galois, National University of Singapore, Rapitt, Center for Applied Internet Data Analysis, Funke Mediengruppe, Wargaming, Oetker Digital
Strava, The New York Times, Spotify, Blue Bottle Coffee Company, Eventbrite, Box, Circa, Stripe
Find out what your peers are saying about Microsoft, Slack, Atlassian and others in Enterprise Social Software. Updated: June 2025.
858,649 professionals have used our research since 2012.