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

PCPartPicker
Measured local-LLM speeds on real home hardware

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 | getrigbase.com |
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| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Mattermost yet.
What tokens/sec will you get running Qwen, Gemma or gpt-oss locally? 206 measured home builds, every number sourced. Free CC BY 4.0 dataset. RigBase is a free database of measured local-LLM inference speeds on real home hardware. It holds 206 builds and 499 tokens/sec results across 58 models,...
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 RigBase 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.


Share your experience with using Mattermost and RigBase. 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 RigBase 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 / about 1 month 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 / 3 months ago
How does it compare to MatterMost [1]? [1] https://mattermost.com/. - Source: Hacker News / 6 months ago
Tracking RigBase since Oct 2026.
When comparing Mattermost and RigBase, you can also consider the following products.


By offering its users with multiple buying guides, this PC building website basically assist its users in building their own PC and give them ideas for creating ideal PC.
Compare PCPartPicker to Mattermost or RigBase:

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Compare Rocket.Chat to Mattermost or RigBase:

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 RigBase:

Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
Compare Microsoft Teams to Mattermost or RigBase:

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 RigBase: