Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Network Troubleshooting Software

tcpdump vs Colasoft Capsa

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score tcpdump #3 in Network Troubleshooting Software 8.9/10 Free plan Free plan✓ 0 of 2 features Visit tcpdump
Colasoft Capsa #6 in Network Troubleshooting Software 8.6/10 Free plan · 30-day trial Free planFree trial✓ 0 of 2 features Visit Colasoft

tcpdump leads on 0 checks, Colasoft Capsa on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoretcpdump · 8.9/10
  • Free planboth
  • Free trialonly Colasoft Capsa

tcpdump scores higher on our rubric for network troubleshooting software: 8.9 against 8.6 out of 10; our editors rank them #3 and #6.

tcpdump is the better fit for free command-line packet capture. Colasoft Capsa is the better fit for windows packet analysis with a free starting plan.

  • tcpdump fits best

    Free command-line packet capture

  • Colasoft Capsa fits best

    Windows packet analysis with a free starting plan

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature tcpdump 8.9/10 Visit ↗ Colasoft Capsa 8.6/10 Visit ↗
At a glance
Editor score 8.9 8.6
Ranking #3 in Network Troubleshooting Software #6 in Network Troubleshooting Software
Best for Free command-line packet capture Windows packet analysis with a free starting plan
Pricing model Free Free plan + paid
Starting price Free plan $695 one-time
Free plan ✓ ✓
Free trial — 30 days
Deployment Desktop, Self-hosted Desktop
Platforms Windows, macOS, Linux Windows
Support Community, Docs Email, Docs, Tickets
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features tcpdump 0/2 · Colasoft Capsa 0/2
Packet capture Not checked yet Not checked yet
Path analysis Not checked yet Not checked yet
Specs
Deployment Not checked yet Not checked yet
Supported platforms Not checked yet Not checked yet
Device limit Not checked yet Not checked yet
Our review
Pros
  • Captures live traffic and filters packets with Berkeley Packet Filter expressions
  • Reads and writes pcap files, and reads pcapng capture files
  • Supports remote interface capture through RPCAP/libpcap
  • Captures live traffic and analyzes TCP and UDP conversations.
  • Decodes packets and can decrypt HTTPS traffic using supported key files.
  • Replays packet files and provides automated diagnosis and security analysis.
Cons
  • Its command-line focus offers less built-in visual analysis than Wireshark
  • Support channels are community resources and documentation
  • It is distributed as software, not as a vendor-hosted service
  • Runs on Windows only.
  • Captures locally, with no remote capture.
  • Professional and Enterprise are single-seat licenses.
Our verdict

For network troubleshooting, monitoring, traffic analysis, and security diagnostics, tcpdump provides command-line packet capture and inspection. It is a fit for people who want to capture traffic from available interfaces, filter packets,…

Read the review →

Colasoft Capsa is a desktop network protocol analyzer for network engineers, administrators, developers, and networking students working on Windows. It captures wired and wireless traffic in real time, inspects protocols, applications,…

Read the review →
  1. tcpdumpNetwork Troubleshooting Software 8.9Free plan
  2. Colasoft CapsaNetwork Troubleshooting Software 8.6Free plan · 30-day trial

Strengths and trade-offs

  • tcpdump — where it wins

    • Captures live traffic and filters packets with Berkeley Packet Filter expressions
    • Reads and writes pcap files, and reads pcapng capture files
    • Supports remote interface capture through RPCAP/libpcap

    Where it doesn't

    • Its command-line focus offers less built-in visual analysis than Wireshark
    • Support channels are community resources and documentation
    • It is distributed as software, not as a vendor-hosted service

  • Colasoft Capsa — where it wins

    • Captures live traffic and analyzes TCP and UDP conversations.
    • Decodes packets and can decrypt HTTPS traffic using supported key files.
    • Replays packet files and provides automated diagnosis and security analysis.

    Where it doesn't

    • Runs on Windows only.
    • Captures locally, with no remote capture.
    • Professional and Enterprise are single-seat licenses.
  • tcpdump8.9/10 · Free plan

    Free, open-source packet capture and inspection for people comfortable at the command line.

    Visit tcpdumpFull verdict →
  • Colasoft Capsa8.6/10 · Free plan · 30-day trial

    A Windows-focused analyzer with a free learning edition and paid perpetual licenses.

    Visit ColasoftFull verdict →

More comparisons

All network troubleshooting software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update