Tenable Nessus vs Avast One
A comprehensive head-to-head comparison of two leading security & cybersecurity solutions in 2026. Compare features, pricing, ratings, and more to find the right fit.
Quick Verdict
Choose Tenable Nessus if you need Network scanning and prefer a free starting option. Choose Avast One if you prioritize Antivirus and want a free tier to start. Tenable Nessus has a higher user rating (4.7 vs 4.4).
Tenable Nessus vs Avast One: At a Glance
| Criteria | Tenable Nessus | Avast One |
|---|---|---|
| User Rating | 4.7 | 4.4 |
| Pricing | Free | Free |
| Pricing Model | subscription | freemium |
| Free Plan | ||
| Platforms | Windows, Linux, Macos, Cloud | Web, Desktop, Mobile |
| Category | Security & Cybersecurity | Security & Cybersecurity |
| Founded | 2002 | 1988 |
Feature Comparison: Tenable Nessus vs Avast One
| Feature | Tenable Nessus | Avast One |
|---|---|---|
| Network scanning | ||
| Vulnerability detection | ||
| Configuration assessment | ||
| Malware detection | ||
| Compliance checking | ||
| Cloud security assessment | ||
| Mobile scanning | ||
| API access | ||
| AWS | ||
| Azure | ||
| Google Cloud | ||
| Splunk | ||
| ServiceNow | ||
| Jira | ||
| SOC2 Type 2 | ||
| Antivirus | ||
| Firewall | ||
| VPN | ||
| Data breach monitoring | ||
| Email Guardian | ||
| Webcam Shield | ||
| Ransomware Shield | ||
| Performance optimization | ||
| Windows Security | ||
| macOS | ||
| Chrome | ||
| Firefox | ||
| AV-TEST Certified | ||
| AV-Comparatives Award | ||
| Cloud deployment |
Tenable Nessus vs Avast One: Pricing Breakdown
Tenable Nessus Pricing
Model: subscription
- Up to 16 ips
- Network scanning
- Vulnerability assessment
- Free forever
- Unlimited targets
- Enterprise features
- Advanced analytics
- All Professional features
- Cloud integration
- Advanced reporting
Avast One Pricing
Model: freemium
- 1 Device
- Antivirus
- VPN (5GB/week)
- Basic firewall
- 5 Devices
- All Essential features
- Unlimited VPN
- Identity protection
- 30 Devices
- All Individual features
- Family sharing
- Advanced privacy
Pros and Cons
Tenable Nessus
Pros
- Highly rated by users (4.7/5)
- Free plan available to get started
- Available on 4 platforms (Windows, Linux, Macos, Cloud)
- Rich feature set with 15+ capabilities
- Strong Network scanning functionality
- Strong Vulnerability detection functionality
Cons
- May require time to learn advanced features
Avast One
Pros
- Highly rated by users (4.4/5)
- Free plan available to get started
- Available on 3 platforms (Web, Desktop, Mobile)
- Rich feature set with 15+ capabilities
- Strong Antivirus functionality
- Strong Firewall functionality
Cons
- May require time to learn advanced features
Who Should Use Tenable Nessus vs Avast One?
Choose Tenable Nessus if you:
- Need Network scanning
- Want to start for free
- Work primarily on Windows and Linux
- Value Vulnerability detection
Choose Avast One if you:
- Need Antivirus
- Want to start for free
- Work primarily on Web and Desktop
- Value Firewall
Frequently Asked Questions: Tenable Nessus vs Avast One
Is Tenable Nessus better than Avast One?
It depends on your needs. Tenable Nessus has a 4.7/5 user rating while Avast One has 4.4/5. Tenable Nessus excels in Network scanning and Vulnerability detection, while Avast One stands out with Antivirus and Firewall. Consider your budget (Free vs Free), platform needs, and specific feature requirements.
Which is cheaper, Tenable Nessus or Avast One?
Tenable Nessus offers a free plan and starts at Free. Avast One offers a free plan and starts at Free. Compare the specific plan features to determine the best value for your use case.
Can I use Tenable Nessus and Avast One together?
While both are security & cybersecurity tools, some teams use complementary software together. Check each product's API and integration capabilities for compatibility. However, most users find that one solution covers their core security & cybersecurity needs.
What are the main differences between Tenable Nessus and Avast One?
The key differences include: pricing model (subscription vs freemium), platform support (Windows, Linux, Macos, Cloud vs Web, Desktop, Mobile), and feature focus. Tenable Nessus emphasizes Network scanning, Vulnerability detection, Configuration assessment while Avast One focuses on Antivirus, Firewall, VPN. User ratings differ slightly: 4.7 vs 4.4 out of 5.
Ready to choose?
Explore detailed reviews, user ratings, and pricing for both Tenable Nessus and Avast One.