MantisBT
Prometheus
| Feature | MantisBT | Prometheus |
|---|---|---|
| Pricing | Free / from $4.95/mo | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 3.9 / 5 | 4.5 / 5 |
| Best For | developers, small-teams, open-source-projects, budget-conscious-teams | devops-engineers, sre-teams, kubernetes-users, infrastructure-teams |
| Founded | 2000 | 2012 |
| Bug Tracking | ✓ | ✗ |
| Custom Fields | ✓ | ✗ |
| Email Notifications | ✓ | ✗ |
| Role Management | ✓ | ✗ |
| Plugins | ✓ | ✗ |
| Time Tracking | ✓ | ✗ |
| Metrics Collection | ✗ | ✓ |
| Alerting | ✗ | ✓ |
| Promql | ✗ | ✓ |
| Service Discovery | ✗ | ✓ |
| Grafana Integration | ✗ | ✓ |
| Multi Dimensional Data | ✗ | ✓ |
✓ MantisBT Pros
- Free and open-source
- Easy to set up
- Lightweight
- Extensible with plugins
✗ MantisBT Cons
- Dated interface
- Limited agile features
- Small community vs alternatives
✓ Prometheus Pros
- Free and open-source
- Powerful query language
- Great Kubernetes integration
- Active community
✗ Prometheus Cons
- No built-in long-term storage
- Complex setup
- Steep learning curve
The Verdict
MantisBT is built for developers and small teams, with a focus on bug-tracking and custom-fields. Prometheus targets devops engineers and sre teams and leads with metrics-collection and alerting.
Prometheus uses custom enterprise pricing, while MantisBT starts at $4.95/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Prometheus edges out on user ratings (4.5 vs 3.9). While both are well-regarded, that gap reflects real differences in user satisfaction worth considering.
Bottom line: Prometheus has a slight overall edge — but if free and open-source matters most to you, MantisBT may still be the right call.