LibreNMS vs Prometheus: Which Should You Choose in 2026?
Choosing between LibreNMS and Prometheus comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
LibreNMS
Automated network discovery, monitoring, and alerting for your entire infrastructure.
Best for you if:
- • Automatically discovers and monitors network devices.
- • Provides flexible alerting and extensive device support.
Prometheus
Monitoring and alerting toolkit
Best for you if:
- • You want the higher-rated option (8.8/10 vs 0.0/10)
- • Prometheus is an open-source monitoring system with a time-series database
- • It collects metrics, provides alerting, and powers Grafana dashboards
| At a Glance |  LibreNMS |  Prometheus |
|---|---|---|
Price | Free | Free |
Best For | Monitoring | Monitoring |
Rating | —/100 | 88/100 |
| Feature | LibreNMS | Prometheus |
|---|---|---|
| Pricing Model | Free | Free |
| Editorial Score | — | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Monitoring | MonitoringLog Management |
Understanding the Differences
Both LibreNMS and Prometheus solve similar problems, but they approach them differently.LibreNMS positions itself as "automated network discovery, monitoring, and alerting for your entire infrastructure." while Prometheusfocuses on "monitoring and alerting toolkit". These differences matter depending on what you're trying to accomplish.
When to Choose LibreNMS
LibreNMS makes sense if you're looking for a completely free solution.
When to Choose Prometheus
Prometheus is worth considering if you need a free tool. Scoring 88/100, it edges ahead in our evaluation.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, LibreNMS lets you get started without pulling out your credit card.
We'd pick: LibreNMS
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Prometheus is built for teams that are leveling up.
We'd pick: Prometheus
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: Prometheus
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? LibreNMS is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Prometheus higher (88/100). But the community has upvoted Prometheus more (0 votes). Pick your source of truth.
Key Takeaways
What Prometheus Does Better
- Higher overall score (88/100)
- Our recommendation for most use cases
Consider LibreNMS If
- You need a completely free solution
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Prometheus (88/100). But the honest answer is that "better" depends on your situation. Prometheus scores higher in our analysis, but LibreNMS might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is LibreNMS or Prometheus better?
Based on our analysis, Prometheus scores higher with 88/100. LibreNMS isfree while Prometheus is free. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from LibreNMS to Prometheus easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do LibreNMS and Prometheus offer free trials?
Most software in this category offers free trials or free tiers. LibreNMS is completely free.Prometheus is completely free. Visit their websites for current trial offers.