Best Mattermost alternatives in 2026
The best Mattermost alternatives in 2026 are Rocket.Chat, PrivOS, Nextcloud. Rocket.Chat is the strongest free option.
Why people look for Mattermost alternatives
- UX behind Slack
- Self-hosting effort
- Smaller app ecosystem
- Enterprise pricing
- Mattermost pricing model: Open source.
Best Mattermost alternative by need
| # | Tool | Pricing | Starts at | Best for | Platforms | Votes |
|---|---|---|---|---|---|---|
| 1 | Rocket.Chat Open-source team chat and omnichannel | Open source | $0 | Enterprise, Developers | web, macos, windows, ios, android | 0 |
| 2 | PrivOS Self-hostable team chat, lists, docs and sandboxed AI agents | Freemium | $20/mo | Small businesses, Enterprise, Developers | web, linux | 0 |
| 3 | Nextcloud Self-hosted content collaboration platform | Open source | $0 | Enterprise, Developers | web, macos, windows, ios, android | 0 |
| 4 | Netgsm Bulk SMS, cloud telephony and messaging for Turkish businesses | Paid | — | Small businesses, Enterprise, Developers | web, ios, android | 0 |
| 5 | agentmash Shared room that warns coding agents before they edit the same file | Freemium | $20/mo | Developers, Small businesses, Enterprise | macos, windows, linux | 0 |
| 6 | BAND Shared chat rooms where AI agents and people coordinate work | Freemium | $18/mo | Developers, Enterprise | web, macos, windows, linux, android | 0 |
| 7 | Zoom Video meetings that became a verb | Freemium | $17/mo | Small businesses, Enterprise | web, macos, windows, ios, android | 0 |
| 8 | Slack Channel-based team messaging | Freemium | $9/mo | Small businesses, Enterprise | web, macos, windows, linux, ios, android | 0 |
| 9 | İleti Merkezi SMS API and bulk messaging for Turkish businesses | Paid | — | Small businesses, Developers | web | 0 |
| 10 | Verimor Cloud phone system, call center and SMS for Turkish businesses | Paid | — | Small businesses, Enterprise | web, ios, android | 0 |
10 Mattermost alternatives compared
- 1
Rocket.Chat
Open-source team chat and omnichannel
Best for: Organizations wanting open-source chat plus omnichannel.
- 2
PrivOS
Self-hostable team chat, lists, docs and sandboxed AI agents
Best for: Small and mid-sized teams that want chat, lists, files and AI agents on infrastructure they control.
- 3
Nextcloud
Self-hosted content collaboration platform
Best for: Organizations needing self-hosted collaboration.
- 4
Netgsm
Bulk SMS, cloud telephony and messaging for Turkish businesses
Best for: Turkish businesses needing SMS and telephony.
- 5
agentmash
Shared room that warns coding agents before they edit the same file
Best for: Engineering teams where several developers run AI coding agents on the same repository at once.
- 6
BAND
Shared chat rooms where AI agents and people coordinate work
Best for: Developers and engineering leaders who run several AI agents at once and need one place to coordinate and audit them.
- 7
Zoom
Video meetings that became a verb
Best for: Organizations that need reliable external video meetings and are not fully on Google or Microsoft suites.
- 8
Slack
Channel-based team messaging
Best for: Teams of any size that are not already standardized on Microsoft Teams and value integrations.
- 9
İleti Merkezi
SMS API and bulk messaging for Turkish businesses
Best for: Turkish businesses sending SMS.
- 10
Verimor
Cloud phone system, call center and SMS for Turkish businesses
Best for: Turkish businesses wanting a cloud phone system.
Mattermost alternatives: FAQ
What is the best alternative to Mattermost?
Based on features, audience and market presence, the strongest Mattermost alternatives are Rocket.Chat, PrivOS, Nextcloud. Rocket.Chat is the closest match for most teams.
Is there a free alternative to Mattermost?
Yes. Rocket.Chat can be used for free. Other free or freemium alternatives to Mattermost include PrivOS, Nextcloud, agentmash.
Is there an open-source alternative to Mattermost?
Yes. Rocket.Chat is open source, so you can self-host it or inspect the code.