---
title: "Mattermost vs Rocket.Chat: Which is Better in 2026? | App Stack Builder"
description: "Mattermost vs Rocket.Chat compared for 2026 — pricing, free tiers, features, pros & cons. See which communication tool is the better fit for your startup."
source: https://appstackbuilder.com/compare/mattermost-vs-rocket-chat
retrieved: 2026-09-02
---

Communication

# Mattermost vs Rocket.Chat: Which is Better in 2026?

Choosing between [Mattermost](https://appstackbuilder.com/tools/mattermost) and [Rocket.Chat](https://appstackbuilder.com/tools/rocket-chat)? Both are popular communication tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Quick verdict

Both Mattermost and Rocket.Chat are strong communication choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.

## Mattermost vs Rocket.Chat — Side by Side

|                | Mattermost                          | Rocket.Chat                       |
| -------------- | ----------------------------------- | --------------------------------- |
| Category       | Communication                       | Communication                     |
| Pricing        | Free                                | Free                              |
| Starting price | Free tier available                 | Free tier available               |
| Free tier      | ✓                                   | ✓                                 |
| Rating         | 4.2                                 | 4.1                               |
| Best for       | Communication — chat, collaboration | Communication — chat, self-hosted |

## Pros & Cons

![Mattermost](https://www.google.com/s2/favicons?domain=mattermost.com&sz=128)

[Mattermost](https://appstackbuilder.com/tools/mattermost)

* ✓Self-hosted data control
* ✓Open-source
* ✓Slack-like experience
* ✓Great for regulated teams
* ✗You run the infrastructure
* ✗Fewer third-party apps than Slack

![Rocket.Chat](https://www.google.com/s2/favicons?domain=rocket.chat&sz=128)

[Rocket.Chat](https://appstackbuilder.com/tools/rocket-chat)

* ✓Full data sovereignty (self-host)
* ✓Open-source
* ✓Omnichannel features
* ✓Good for regulated orgs
* ✗You run the infrastructure
* ✗Setup heavier than SaaS chat

## Key Features Compared

### Mattermost

* ✓Free & open-source
* ✓Self-host for data control
* ✓Channels & integrations
* ✓Slack-like UX

### Rocket.Chat

* ✓Open-source
* ✓Chat, voice, video
* ✓Self-host for data control
* ✓Omnichannel & integrations

### Choose Mattermost if…

* ✓You want a free tier to validate before paying.
* ✓Self-hosted data control
* ✓Open-source
* ✓Slack-like experience
[Mattermost review & pricing ](https://appstackbuilder.com/tools/mattermost)

### Choose Rocket.Chat if…

* ✓You want a free tier to validate before paying.
* ✓Full data sovereignty (self-host)
* ✓Open-source
* ✓Omnichannel features
[Rocket.Chat review & pricing ](https://appstackbuilder.com/tools/rocket-chat)

## Frequently Asked Questions

Is Mattermost better than Rocket.Chat?⌄

Both Mattermost and Rocket.Chat are strong communication choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.

What is the difference between Mattermost and Rocket.Chat?⌄

Mattermost — Open-source, self-hostable team messaging — a Slack alternative for security- and privacy-conscious teams. Rocket.Chat — Open-source, self-hostable team communication platform for security- and data-sovereignty-focused teams. Both are communication tools; the comparison table above breaks down pricing, free tiers, and what each is best for.

Mattermost vs Rocket.Chat: which is cheaper?⌄

Mattermost pricing: Free. Rocket.Chat pricing: Free. Confirm current pricing on each tool's official site, as plans change.

Which is rated higher, Mattermost or Rocket.Chat?⌄

In our catalog, Mattermost rates 4.2 out of 5 and Rocket.Chat rates 4.1 out of 5, so Mattermost has a slight edge on reviews.

See more options in our guide to the [best communication tools for startups](https://appstackbuilder.com/categories/communication).

## Still not sure which to pick?

Get a free, AI-powered tech stack — including the best communication pick for your budget and team — in 60 seconds.

[Build my stack free ](https://appstackbuilder.com/)