Wazuh vs Horizon3.ai (NodeZero): Which is Better in 2026?
Choosing between Wazuh and Horizon3.ai (NodeZero) 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.
Bottom line: Wazuh is our overall pick for security monitoring workflows. Pick Horizon3.ai (NodeZero) if you need security.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Wazuh
Open-source security monitoring
Best for you if:
- • You need something completely free
- • You need security monitoring features specifically
- • Wazuh is an open-source security monitoring platform
- • It provides threat detection, compliance, and incident response
Horizon3.ai (NodeZero)
Autonomous penetration testing that finds and fixes exploitable vulnerabilities
Best for you if:
- • You need security features specifically
- • Autonomously executes real attack techniques in production environments without agents or disruption.
- • Provides clear, evidence-based results that prioritize exploitable vulnerabilities over theoretical risks.
| At a Glance |  Horizon3.ai (NodeZero) | |
|---|---|---|
Starts at | FreeFree tier available | Custom |
Best For | Security Monitoring | Security |
Rating | 4.5/5 | 4.7/5 |
Free plan | Yes | No |
Choose Wazuh or Horizon3.ai (NodeZero)?
Choose Wazuh if
Open-source security monitoring
- Open source SIEM
- Good features
- Self-hostable
- You want a fully free tool (Horizon3.ai (NodeZero) requires payment)
- Your work is security monitoring-shaped, not security-shaped
Choose Horizon3.ai (NodeZero) if
Autonomous penetration testing that finds and fixes exploitable vulnerabilities
- Safely runs in production with zero downtime, trusted by high-security environments
- Eliminates noisy, theoretical vulnerability lists by focusing on proven attack paths
- Provides continuous validation that adapts to every environmental change
- Your work is security-shaped, not security monitoring-shaped
| Feature | Wazuh | Horizon3.ai (NodeZero) |
|---|---|---|
| Pricing Model | Free | Paid |
| User Rating | ★4.5/5 71 reviews | ★4.7/5 36 reviews |
| Categories | Security MonitoringVulnerability Scanning | SecurityTesting & QA |
In-Depth Analysis
Wazuh
Open-source security monitoring
Wazuh's pricing is exceptionally generous, offering a full-featured open-source SIEM/XDR solution for $0.
Watch out
Cloud tier pricing is custom, not transparent
Strengths
- +Open source SIEM
- +Good features
- +Self-hostable
- +Active development
- +Free
Weaknesses
- -Complex setup
- -Learning curve
- -Resource intensive
- -Documentation gaps
- -Enterprise features paid
Key features
Horizon3.ai (NodeZero)
Autonomous penetration testing that finds and fixes exploitable vulnerabilities
Strengths
- +Safely runs in production with zero downtime, trusted by high-security environments
- +Eliminates noisy, theoretical vulnerability lists by focusing on proven attack paths
- +Provides continuous validation that adapts to every environmental change
Weaknesses
- -Requires production environment access, which may not be feasible for all organizations
- -Focus on autonomous testing may not replace manual penetration testing for complex, bespoke scenarios
Key features
Pricing: Wazuh vs Horizon3.ai (NodeZero)
| Plan | Wazuh | Horizon3.ai (NodeZero) |
|---|---|---|
| Tier 1 | Free Open Source | N/A |
| Tier 2 | Free Cloud | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Wazuh pricing and Horizon3.ai (NodeZero) pricing.
Who Should Use What?
On a budget?
Wazuh is free. Horizon3.ai (NodeZero) is paid.
Go with: Wazuh
Want the highest-rated option?
Wazuh: 4.5/5 (71 reviews). Horizon3.ai (NodeZero): 4.7/5 (36 reviews).
Go with: Horizon3.ai (NodeZero)
Value user reviews?
Wazuh: 71 reviews (4.5/5). Horizon3.ai (NodeZero): 36 reviews (4.7/5).
Go with: Wazuh
3 Questions to Help You Decide
What's your budget?
Wazuh is free. Horizon3.ai (NodeZero) is paid. Go with Wazuh if free matters most.
What's your use case?
Wazuh is a security monitoring tool. Horizon3.ai (NodeZero) is in security. Pick the category that matches your needs.
How important are ratings?
Horizon3.ai (NodeZero) is rated higher: 4.7/5 vs 4.5/5.
Key Takeaways
Wazuh
- Larger review base (71 reviews)
- Completely free
- Our pick for this comparison
Horizon3.ai (NodeZero)
- Higher user rating: 4.7/5 vs 4.5/5
- Better fit for security
The Bottom Line
Wazuh is our pick.
Frequently Asked Questions
Is Wazuh or Horizon3.ai (NodeZero) better?
Wazuh is rated in our evaluation. Wazuh is free and Horizon3.ai (NodeZero) is paid.
What are Wazuh and Horizon3.ai (NodeZero) used for?
Wazuh: Open-source security monitoring. Horizon3.ai (NodeZero): Autonomous penetration testing that finds and fixes exploitable vulnerabilities.
What does Wazuh cost vs Horizon3.ai (NodeZero)?
Wazuh is completely free. Horizon3.ai (NodeZero) is a paid tool. Visit their websites for detailed pricing.