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iftop vs Nmap

Professional comparison and analysis to help you choose the right software solution for your needs.

iftop icon
iftop
Nmap icon
Nmap

iftop vs Nmap: The Verdict

⚡ Summary:

iftop: iftop is an open source command-line tool used to monitor network usage and bandwidth in real-time. It displays a table of current TCP/IP connections using bandwidth over a specified interface.

Nmap: Nmap is an open source network discovery and security auditing tool. It is used to discover hosts and services on a network and to detect potential vulnerabilities.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature iftop Nmap
Sugggest Score — —
Category Network & Admin Network & Admin
Pricing Open Source Free

Product Overview

iftop
iftop

Description: iftop is an open source command-line tool used to monitor network usage and bandwidth in real-time. It displays a table of current TCP/IP connections using bandwidth over a specified interface.

Type: software

Pricing: Open Source

Nmap
Nmap

Description: Nmap is an open source network discovery and security auditing tool. It is used to discover hosts and services on a network and to detect potential vulnerabilities.

Type: software

Pricing: Free

Key Features Comparison

iftop
iftop Features
  • Displays bandwidth usage on selected network interface
  • Shows both inbound and outbound traffic
  • Can filter by IP address or network port
  • Real-time monitoring and stats
  • Text-based interface for terminal/CLI use
Nmap
Nmap Features
  • Port scanning
  • OS detection
  • Version detection
  • Scriptable interaction
  • Flexible target specification
  • Powerful output formats

Pros & Cons Analysis

iftop
iftop

Pros

  • Free and open source
  • Lightweight and low resource usage
  • Easy to use with no configuration needed
  • Good for identifying bandwidth hogs and monitoring network usage
  • Works on Linux, Unix, and BSD systems

Cons

  • Terminal-only, no GUI
  • Can only monitor one interface at a time
  • Not as feature-rich as commercial bandwidth monitors
  • Requires some Linux/Unix command line knowledge to use
  • Does not work on Windows
Nmap
Nmap

Pros

  • Free and open source
  • Cross-platform
  • Powerful scanning capabilities
  • Scripting engine for advanced tests
  • Active development community

Cons

  • Steep learning curve
  • Can be detected by IDS/IPS
  • Requires root/admin privileges for full features

Pricing Comparison

iftop
iftop
  • Open Source
Nmap
Nmap
  • Free

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Learn More About Each Product

iftop
iftop
Reviews, pricing & alternatives →
Nmap
Nmap
Reviews, pricing & alternatives →

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