
Slack
Rocket.Chat
Discord
Element.io
Telegram
Zulip
Microsoft Teams
Mattermost is an open source alternative to Slack.

Discord
Element.io
Camsurf
Public
Chatrandom
ThXChat
Signal
A text-based chat platform for small, topic-based group conversations, designed to make discussions easier to follow and more natural to join.

Which is more popular?
Based on our record, Mattermost seems to be more popular. It has been mentioned 76 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | mattermost.com | moopes.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States | Startup from Australia · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Mattermost yet.
Moopes is a text-based chat platform designed to support small, topic-based group conversations. The product enables users to explore and participate in live discussions organised around shared interests, providing a structured environment for interaction without reliance on feeds or one-on-one...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Mattermost is recommended for organizations that prioritize data privacy and security, need extensive customization options, or are looking to integrate a collaboration tool into existing systems. It is also suitable for teams in regulated industries requiring on-premises solutions.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Mattermost - An Open Source, Self Hosted, Slack Chat Alternative
More videos
No Moopes videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mattermost and Moopes.
Moopes's answer:
Moopes focuses on small, topic-based group conversations rather than large chat spaces or one-on-one matching. By limiting group size and organising discussions around shared interests, it creates a more structured environment where conversations are easier to follow and participation is more consistent.
Moopes's answer:
Moopes provides a simpler and more focused chat experience compared to platforms that rely on large communities or fast-paced interactions. Smaller groups and topic-based rooms make it easier to join conversations, stay engaged, and contribute without the noise or pressure often found in other chat platforms.
Moopes's answer:
Moopes is designed for individuals who enjoy chatting and want to participate in topic-based group conversations. This includes people looking to connect through shared interests, join ongoing discussions, and engage in a more structured and manageable chat environment.
Moopes's answer:
Moopes was created to address the challenges of modern social and chat platforms, where conversations are often either too large and difficult to follow or too short-lived to feel meaningful. The platform focuses on creating smaller, structured spaces where discussions can develop more naturally over time.
Moopes's answer:
Moopes is built using modern cloud-based infrastructure and mobile technologies to support real-time messaging, scalable group conversations, and cross-platform access across web and mobile devices.
Share your experience with using Mattermost and Moopes. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Mattermost is an open-source platform that enables safe collaboration in self-hosted chat programs featuring file sharing, search, and integrations; groups and businesses can use it as an internal chat.
Mattermost uses monolithic architecture, which is tightly coupled and complex to understand. It restricts the scalability of the collaboration tool, which is a limitation for growing businesses. In that case,...
Below is a curated list of the 12 best self-hosted messaging apps like MirrorFly, Mattermost, Zulio, Nextcloud, and Rocket.chat that offer unique collaboration features and lets you take full control of your data.
We have no reviews of Moopes yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Mattermost | Remote (US and Canada) | FT | Multiple roles Mattermost (https://mattermost.com) is an open-core collaboration and workflow automation platform for air-gapped, on-prem and private clouds. Our customers are in defense,... - Source: Hacker News / 1 day ago
The amazing thing is that there is almost always an open-source alternative that is 10x better in many ways, in the case of slack https://mattermost.com/ I'm looking forward for AI to make it very easy to deploy your own tools and walk... - Source: Hacker News / about 1 month ago
How does it compare to MatterMost [1]? [1] https://mattermost.com/. - Source: Hacker News / 5 months ago
Tracking Moopes since Apr 2026.
When comparing Mattermost and Moopes, you can also consider the following products.


Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
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Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Compare Rocket.Chat to Mattermost or Moopes:

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Compare Element.io to Mattermost or Moopes:

Camsurf is a piece of social networking software that was designed to let people communicate via live video chat directly through the app.
Compare Camsurf to Mattermost or Moopes: