
Slack
Rocket.Chat
Discord
Element.io
Telegram
Zulip
Microsoft Teams
Mattermost is an open source alternative to Slack.
WordPress
Local by Flywheel
Free WordPress plugin that enables PRO features in Elementor
Which is more popular?
Based on our record, Mattermost should be more popular than PRO Elements. It has been mentioned 75 times since March 2021.
Website, pricing, platforms and company facts side by side.
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PRO
PRO Elements
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|---|---|---|
| Website | mattermost.com | proelements.org |
| Pricing | — | |
| Company | Startup from the United States | — |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
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.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Mattermost and PRO Elements. 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 PRO Elements 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 / 22 days 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 / 5 months ago
The people in this subreddit generally glorify the license because they’re the developers and defend it. I do agree with you, I always get downvoted for posting the https://proelements.org/ link lol. Source: over 3 years ago
Proelements is a must have if you don't need premium support and paid templates you get from Elementor Pro subscription. Source: over 3 years ago
Just search for "are gpl plugins legal wordpress" and read. All plugins for wordpress have to be licensed under GPL, even pro. But you pay for the service like kits and so on. There are plenty of pages selling "gpl plugins" for... Source: over 3 years ago
When comparing Mattermost and PRO Elements, you can also consider the following products.

A messaging app for teams who see through the Earth!
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WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
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Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
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Provides a simple, local development environment with a friendly GUI.
Compare Local by Flywheel to Mattermost or PRO Elements:

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Compare Discord to Mattermost or PRO Elements:

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 PRO Elements: