Mattermost
osTicket
| Feature | Mattermost | osTicket |
|---|---|---|
| Pricing | Free / from $10/mo | Free / from $12/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.2 / 5 | 4 / 5 |
| Best For | devops-teams, security-conscious-orgs, government, enterprise | small-businesses, budget-conscious-teams, self-hosted-advocates, it-departments |
| Founded | 2015 | 2003 |
| Messaging | ✓ | ✗ |
| Channels | ✓ | ✗ |
| Playbooks | ✓ | ✗ |
| Integrations | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Compliance | ✓ | ✗ |
| Ticket Management | ✗ | ✓ |
| Email Piping | ✗ | ✓ |
| Custom Fields | ✗ | ✓ |
| Sla Management | ✗ | ✓ |
| Agent Collision Avoidance | ✗ | ✓ |
| Knowledge Base | ✗ | ✓ |
✓ Mattermost Pros
- Self-hostable
- Open source
- DevOps integrations
- Secure
✗ Mattermost Cons
- Smaller ecosystem
- Fewer integrations than Slack
- Self-hosting complexity
✓ osTicket Pros
- Completely free self-hosted version
- Active open-source community
- Highly customizable
- Supports multiple departments
✗ osTicket Cons
- Dated user interface
- Requires server management
- Limited automation compared to paid tools
The Verdict
Mattermost is built for devops teams and security conscious orgs, with a focus on messaging and channels. osTicket targets small businesses and budget conscious teams and leads with ticket-management and email-piping.
Pricing is close: Mattermost starts at $10/mo versus $12/mo for osTicket — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.