Report updated Apr 2, 2026
Mattermost
v2.38.2Defense, intelligence, security, and critical infrastructure organizations that require sovereign data control and high-security communication.
What Is Mattermost?
Launched Jul 10, 2017
Updated Apr 2026
What users think iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
What does it look like?
What are the key features?
Full control over data and infrastructure by running the server on-premises or in private clouds.
Automated, repeatable workflows to manage incident response and complex operational processes.
Centralized management of mobile endpoints to ensure security and compliance policies.
What do users think? iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
“Recent user voice shows a mixed sentiment. Users appreciate self-hosting & open source, but report app stability and crashes.”
What Users Love
Excellent for a self-hosted family affair
Mattermost is what I wanted Slack to be.
Pain Points
The app doesn't open at all!
Always crash now... especially DM
High confidence · 99 reviews available
What are the pros and cons?
Pros
- Strong brand reputation in high-security sectors
- Robust self-hosting capabilities
- Clear focus on data sovereignty
Cons
- Poor mobile app stability
- Recurring notification bugs
- Sync issues
What is the market outlook?
Growth Opportunities
- Expanding into regulated industries like finance and healthcare
- Improving the 'first-run' experience for enterprise admins
Market Threats
- Established giants like Microsoft Teams adding more 'sovereign cloud' features
- Emerging decentralized messengers
Who competes with Mattermost?
The Nemesis
Rocket.Chat
★4.4 (4K)Rocket.Chat Technologies Corp.
Direct competitor in the open-source, self-hosted, secure team communication space with a focus on data sovereignty.
Contenders
Element Classic
★3.3 (572)Vector Creations Limited
Competes on high-security, decentralized, and self-hosted communication infrastructure for sensitive organizations.
Zulip
★3.7 (15)Kandra Labs, Inc.
Offers a self-hosted, thread-based communication platform favored by technical and mission-critical teams.
Electric Wire Estimator
H3 Apps, LLC
Focuses on end-to-end encrypted collaboration and secure messaging for enterprise and government clients.
Same Space
Threema Work. For Companies
★3.9 (24)Threema GmbH
Enterprise-grade secure messaging platform with a focus on privacy and compliance in regulated industries.
Pumble
★4.7 (1K)CAKE.com
A team chat alternative that offers a more cost-effective approach to business communication.
New Kids on the Block
Session - Private Messenger
★4.7 (22K)Session Foundation
Rising threat in the privacy-first communication space with decentralized architecture that appeals to security-conscious users.
Beeper
★4.7 (607)Automattic
Innovative universal messaging aggregator that is gaining traction by unifying fragmented communication channels.
What are the key takeaways?
Mattermost is a divisive business app that is available. With a 4.7/5 rating from 24.7K reviews, it receives mixed feedback from users. Users particularly appreciate self-hosting & open source, though app stability and crashes remains a common concern.
Best for: Defense, intelligence, security, and critical infrastructure organizations that require sovereign data control and high-security communication.
How much does it cost?
Model: subscription
Focuses on B2B/B2G enterprise sales with a 'try-before-you-buy' model via 1-hour preview environments and self-hosted deployment options.
iOS Version
2.38.2
Android Version
2.38.2
Release Date
Jul 10, 2017
iOS Price
Free
Android Price
Free
Developer
Mattermost, Inc.