Best Mattermost Alternatives (2026) — 4+ Options Compared
Last updated: March 2026 • 14 min read
Looking for the best Mattermost alternatives? You're not alone. As one of the most popular tools for security-conscious organizations, Mattermost has gained significant market share — but that doesn't mean it's the right choice for everyone. While Mattermost offers a free tier (Free (self-hosted)), its paid plans starting at $10/user/mo can become costly as your team grows.
We've researched and tested 4+ top Mattermost competitors to bring you this comprehensive comparison.Whether you're looking for a free Mattermost alternative like Slack or Rocket.Chat, or an open-source Mattermost alternative you can self-host, this guide will help you find the perfect replacement. We compare pricing, features, pros and cons, and provide direct affiliate links to get you started.
📋 Quick Summary
- Total alternatives: 4
- Free alternatives: 4 (Slack, Rocket.Chat, Element)
- Open-source options: Rocket.Chat, Element, Zulip
- Best overall: Slack
- Best free: Slack
Why Look for Mattermost Alternatives?
While Mattermost has established itself as a leader in communication, many users find themselves searching for Mattermost competitors that better meet their specific needs. Here are the most common reasons teams make the switch:
💰 Cost Savings
While Mattermost has a free tier, paid plans starting at $10/user/mo can quickly become expensive as you add team members or need advanced features.
✨ Better Features
Requires hosting and fewer integrations are frequently cited pain points. Alternatives often excel in specific areas where Mattermost falls short.
🎯 Ease of Use
Many users find Mattermost overly complex for their needs. Simpler alternatives can reduce training time and increase team adoption without sacrificing essential features.
Different tools excel at different use cases — you may find a solution that's specifically built for your workflow rather than trying to adapt to Mattermost's approach.
📊 Quick Comparison Table
| Tool | Free Tier | Starting Price | Rating | Open Source | Best For |
|---|---|---|---|---|---|
| Mattermost | ✓ Free (self-hosted) | $10/user/mo | ⭐ 4.1 | ✓ Yes | Security-conscious organizations |
| Slack | ✓ 90-day message history | $8.75/user/mo | ⭐ 4.4 | No | Teams of all sizes |
| Rocket.Chat | ✓ Free (self-hosted) | $4/user/mo | ⭐ 4 | ✓ Yes | Organizations needing open-source, compliant chat |
| Element | ✓ Free (self-hosted or matrix.org) | $5/user/mo | ⭐ 3.9 | ✓ Yes | Privacy-focused organizations |
| Zulip | ✓ Free (self-hosted or cloud) | $6.67/user/mo | ⭐ 4 | ✓ Yes | Teams needing organized, threaded conversations |
Detailed Reviews of Each Alternative
Slack
Business communication platform for team messaging and collaboration.
Slack is the leading business communication platform, used by millions of teams worldwide for messaging, file sharing, and integrating with other work tools. Now owned by Salesforce, Slack has defined the category of team messaging with its channel-based communication model, extensive app integrations, and searchable message history.
Pros
- ✓ Industry standard
- ✓ Massive integration ecosystem
- ✓ Great search
- ✓ Familiar to most teams
Cons
- ✗ Expensive at scale
- ✗ Can be distracting
- ✗ Limited free plan now
- ✗ Message history limits
Rocket.Chat
Open-source communication platform for teams.
Rocket.Chat is an open-source team communication platform offering channels, direct messaging, video conferencing, and file sharing. It's highly customizable and can be self-hosted, making it popular among organizations needing data sovereignty and compliance with regulations like GDPR and HIPAA.
Pros
- ✓ Open source
- ✓ Self-hosted option
- ✓ Feature rich
- ✓ Good for compliance
Cons
- ✗ Resource heavy
- ✗ Complex setup
- ✗ Performance issues
- ✗ UI not as polished
Element
Secure messaging app built on the Matrix protocol.
Element is a secure messaging platform built on the open Matrix protocol. It offers end-to-end encrypted messaging, voice, and video calls with the ability to bridge to other platforms like Slack, Discord, and Teams. Element can be self-hosted and is used by governments and enterprises for secure communication.
Pros
- ✓ End-to-end encrypted
- ✓ Open protocol
- ✓ Bridges to other apps
- ✓ Self-hostable
Cons
- ✗ Complex setup
- ✗ Smaller user base
- ✗ UI needs work
- ✗ Performance issues
Zulip
Open-source team chat with unique topic-based threading.
Zulip is an open-source team chat application with a unique topic-based threading model that makes it easier to follow conversations than traditional channel-based chat. Used by large open-source projects and companies, Zulip excels when teams need organized, threaded discussions.
Pros
- ✓ Unique threading model
- ✓ Open source
- ✓ Free self-hosted
- ✓ Good for async
Cons
- ✗ Unfamiliar UI
- ✗ Smaller community
- ✗ Learning curve
- ✗ Fewer integrations
🏆 Our Recommendations
Best Overall Alternative:
Slack — Teams of all sizes
Best Free Alternative:
Slack — 90-day message history
Best Open-Source Alternative:
Rocket.Chat — Organizations needing open-source, compliant chat
❓ Frequently Asked Questions
What is the best free alternative to Mattermost?
The best free alternative to Mattermost is Slack, which offers 90-day message history. Other excellent free options include Rocket.Chat and Element. These free alternatives provide core functionality comparable to Mattermost without the cost barrier.
Is there an open-source alternative to Mattermost?
Yes! Rocket.Chat, Element, Zulip are open-source alternatives to Mattermost that you can self-host for complete data control. Open-source alternatives give you full ownership of your data and often have active communities contributing improvements.
What is the cheapest alternative to Mattermost?
The cheapest alternatives are the free options: Slack, Rocket.Chat, Element. For paid solutions, you'll find competitive pricing starting at lower rates than Mattermost's $10/user/mo. When comparing costs, consider both the base price and any per-user fees that can add up quickly for growing teams.
Why should I consider alternatives to Mattermost?
Users look for Mattermost alternatives for several reasons: Cost savings — many alternatives offer similar features at a fraction of the price. Better features — some alternatives excel in specific areas where Mattermost falls short, such as requires hosting. Ease of use — simpler interfaces that require less training. Data control — open-source options give you complete ownership of your data.
Can I migrate my data from Mattermost to an alternative?
Most Mattermost alternatives offer import tools or migration assistance. The specific process depends on your current data volume and the alternative you choose. Many tools provide CSV import, API connections, or dedicated migration support. It's recommended to test the migration process with a small data set first and always back up your data before switching. Most alternatives also offer free trials so you can verify everything transfers correctly before committing.
Which Mattermost alternative is best for small businesses?
For small businesses, we recommend Slack because it offers a generous free tier that can support your growth before you need to pay. Small businesses should prioritize tools that offer scalable pricing, so you only pay more as you grow, rather than flat per-user fees that can strain limited budgets.
How do open-source Mattermost alternatives work?
Open-source alternatives like Rocket.Chat and Element and Zulip provide the software source code freely available. You can self-host these on your own servers or use cloud hosting. Self-hosting gives you complete data privacy and eliminates subscription fees, but requires technical expertise for setup and maintenance. Many organizations find the trade-off worthwhile for the cost savings and data control.
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