Mattermost
Terraform
| Feature | Mattermost | Terraform |
|---|---|---|
| Pricing | Free / from $10/mo | Free / from $0.00014/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.2 / 5 | 4.5 / 5 |
| Best For | devops-teams, security-conscious-orgs, government, enterprise | devops-engineers, cloud-architects, platform-teams, infrastructure-teams |
| Founded | 2015 | 2014 |
| Messaging | ✓ | ✗ |
| Channels | ✓ | ✗ |
| Playbooks | ✓ | ✗ |
| Integrations | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Compliance | ✓ | ✗ |
| Infrastructure As Code | ✗ | ✓ |
| Multi Cloud | ✗ | ✓ |
| State Management | ✗ | ✓ |
| Plan And Apply | ✗ | ✓ |
| Modules | ✗ | ✓ |
| Provider Ecosystem | ✗ | ✓ |
| Drift Detection | ✗ | ✓ |
✓ Mattermost Pros
- Self-hostable
- Open source
- DevOps integrations
- Secure
✗ Mattermost Cons
- Smaller ecosystem
- Fewer integrations than Slack
- Self-hosting complexity
✓ Terraform Pros
- Multi-cloud support with consistent workflow
- Declarative language (HCL) is readable and maintainable
- Massive provider ecosystem (3,000+ providers)
- State management tracks real infrastructure
- Terraform Cloud adds collaboration features
✗ Terraform Cons
- State file management requires careful handling
- BSL license change from open source caused controversy
- Complex modules can be hard to debug
The Verdict
Mattermost is built for devops teams and security conscious orgs, with a focus on messaging and channels. Terraform targets devops engineers and cloud architects and leads with infrastructure-as-code and multi-cloud.
On pricing, Terraform is the clear winner for budget-conscious users — starting at $0.00014/mo compared to $10/mo for Mattermost. That $9.99986/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Terraform offers broader built-in capabilities (7 features vs 6), while Mattermost takes a more focused approach — which can mean a simpler, faster onboarding experience.
Bottom line: Terraform has a slight overall edge — but if self-hostable matters most to you, Mattermost may still be the right call.