Avast One vs Tenable Nessus
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 Avast One if you need Antivirus and prefer a free starting option. Choose Tenable Nessus if you prioritize Network scanning and want a free tier to start. Tenable Nessus has a higher user rating (4.7 vs 4.4).
Avast One vs Tenable Nessus: At a Glance
| Criteria | Avast One | Tenable Nessus |
|---|---|---|
| User Rating | 4.4 | 4.7 |
| Pricing | Free | Free |
| Pricing Model | freemium | subscription |
| Free Plan | ||
| Platforms | Web, Desktop, Mobile | Windows, Linux, Macos, Cloud |
| Category | Security & Cybersecurity | Security & Cybersecurity |
| Founded | 1988 | 2002 |
Feature Comparison: Avast One vs Tenable Nessus
| Feature | Avast One | Tenable Nessus |
|---|---|---|
| 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 | ||
| 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 |
Avast One vs Tenable Nessus: Pricing Breakdown
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
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
Pros and Cons
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
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
Who Should Use Avast One vs Tenable Nessus?
Choose Avast One if you:
- Need Antivirus
- Want to start for free
- Work primarily on Web and Desktop
- Value Firewall
Choose Tenable Nessus if you:
- Need Network scanning
- Want to start for free
- Work primarily on Windows and Linux
- Value Vulnerability detection
Frequently Asked Questions: Avast One vs Tenable Nessus
Is Avast One better than Tenable Nessus?
It depends on your needs. Avast One has a 4.4/5 user rating while Tenable Nessus has 4.7/5. Avast One excels in Antivirus and Firewall, while Tenable Nessus stands out with Network scanning and Vulnerability detection. Consider your budget (Free vs Free), platform needs, and specific feature requirements.
Which is cheaper, Avast One or Tenable Nessus?
Avast One offers a free plan and starts at Free. Tenable Nessus 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 Avast One and Tenable Nessus 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 Avast One and Tenable Nessus?
The key differences include: pricing model (freemium vs subscription), platform support (Web, Desktop, Mobile vs Windows, Linux, Macos, Cloud), and feature focus. Avast One emphasizes Antivirus, Firewall, VPN while Tenable Nessus focuses on Network scanning, Vulnerability detection, Configuration assessment. User ratings differ slightly: 4.4 vs 4.7 out of 5.
Ready to choose?
Explore detailed reviews, user ratings, and pricing for both Avast One and Tenable Nessus.