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iftop vs tcpdump

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

iftop icon
iftop
tcpdump icon
tcpdump

iftop vs tcpdump: 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.

tcpdump: tcpdump is a command-line network monitoring and data acquisition tool used to capture packet data flowing over a network. It can intercept and log traffic passing over a digital network or part of a network.

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 tcpdump
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

tcpdump
tcpdump

Description: tcpdump is a command-line network monitoring and data acquisition tool used to capture packet data flowing over a network. It can intercept and log traffic passing over a digital network or part of a network.

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
tcpdump
tcpdump Features
  • Packet capture and network traffic monitoring
  • Capture filters for selective packet capture
  • Reading packets from files for offline analysis
  • Output to console, files, or other programs
  • Decoding of various network protocols

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
tcpdump
tcpdump

Pros

  • Free and open source
  • Available for multiple platforms
  • Powerful command line interface
  • Wide protocol support
  • Allows inspection of raw network traffic
  • Lightweight and fast

Cons

  • Command line only, no GUI
  • Steep learning curve
  • Manual analysis of captures required
  • Does not do automated intrusion detection
  • Requires root/admin rights on most OSes

Pricing Comparison

iftop
iftop
  • Open Source
tcpdump
tcpdump
  • Free

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Learn More About Each Product

iftop
iftop
Reviews, pricing & alternatives →
tcpdump
tcpdump
Reviews, pricing & alternatives →

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