Prometheus
ToolJet
| Feature | Prometheus | ToolJet |
|---|---|---|
| Pricing | Free only | Free / from $20/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.1 / 5 |
| Best For | devops-engineers, sre-teams, kubernetes-users, infrastructure-teams | developers, startups, ops-teams, small-businesses |
| Founded | 2012 | 2021 |
| Metrics Collection | ✓ | ✗ |
| Alerting | ✓ | ✗ |
| Promql | ✓ | ✗ |
| Service Discovery | ✓ | ✗ |
| Grafana Integration | ✓ | ✗ |
| Multi Dimensional Data | ✓ | ✗ |
| Visual Builder | ✗ | ✓ |
| Data Sources | ✗ | ✓ |
| Workflows | ✗ | ✓ |
| Custom Code | ✗ | ✓ |
| Version Control | ✗ | ✓ |
| Multi Tenancy | ✗ | ✓ |
✓ 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
✓ ToolJet Pros
- Open source
- Many data sources
- Drag-and-drop
- Self-hostable
✗ ToolJet Cons
- Documentation gaps
- Fewer widgets than competitors
- Community-dependent support
The Verdict
Prometheus is built for devops engineers and sre teams, with a focus on metrics-collection and alerting. ToolJet targets developers and startups and leads with visual-builder and data-sources.
Prometheus uses custom enterprise pricing, while ToolJet starts at $20/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 4.1). 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 open source matters most to you, ToolJet may still be the right call.