Nmap vs OpenVAS
A detailed comparison to help you choose between Nmap and OpenVAS.
Nmap Network discovery and security auditing tool. | OpenVAS Full-featured open-source vulnerability scanner. | |
|---|---|---|
| Rating | 4.8 (79 reviews) | 4.3 (236 reviews) |
| Pricing Model | free | free |
| Starting Price | Free | Free |
| Best For | Best for users seeking privacy and security tools | Best for users seeking privacy and security tools |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | — | — |
Nmap
Pros
- + Multiple scan techniques, including SYN and connect
- + NSE Lua scripts for discovery and vulnerability checks
- + Service/version detection and OS fingerprinting
- + Cross-platform: Windows, macOS, Linux
- + Free for end users under NPSL
Cons
- - NPSL restricts proprietary redistribution without OEM license
- - Some NSE scripts are dangerous if misused
- - Windows features may require Npcap separately
- - Aggressive scans are noisy and easily detected
OpenVAS
Pros
- + Open-source scanner core (GPL-licensed)
- + GMP API support with gvm-tools automation
- + Modular stack: scanner, manager, and web UI
- + Extensible NVT tests written in NASL
- + Community documentation and container deployment options
Cons
- - Multi-component setup is operationally complex
- - Community Feed coverage is more limited than Enterprise
- - Not as beginner-friendly as some commercial scanners
- - Scan time varies widely; tuning is often required
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