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

Introvrs
A friendship app without swiping. ValuePair introduces you to one person based on what matters to you. You both answer the same questions before comparing your answers.

Which is more popular?
Based on our record, Mattermost seems to be more popular. It has been mentioned 75 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mattermost.com | valuepair.app |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States | 2026 |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
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.
No analysis of ValuePair.app yet.
Walkthroughs and reviews on video.
Mattermost - An Open Source, Self Hosted, Slack Chat Alternative
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mattermost and ValuePair.app.
ValuePair.app's answer:
Next.js with Supabase and PostgreSQL and Capacitor.
ValuePair.app's answer:
There is no profile market place that tries to keep the users inside the app by browsing endless profiles and rate people by their looks. Instead it's all about sharing values. ValuePair asks everyone mandatory questions about their world views and their preferences etc. and then it introduces you to one person at a time.
ValuePair.app's answer:
It's difficult to find people with whom you really get along, that's why it's even more important to ask all the mandatory questions that help people to find out if you actually suit with someone. ValuePair is making this process easy and the core principle will be forever free. There are no ads and no paid features that lock you away from actually using the core principles.
ValuePair.app's answer:
The app is for young adults - 18+ The core audience is in the age range of 20-40
Share your experience with using Mattermost and ValuePair.app. 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 ValuePair.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


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 / 4 months ago
Slack's value is real, especially for cross-company conversations with clients and vendors. But for internal communication in companies that care about data residency or audit requirements, Mattermost is a credible self-hosted... - Source: dev.to / 6 months ago
Tracking ValuePair.app since Aug 2026.
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