CapAnalysis

At a glance

• Editor score
  6.1 / 10
• Pricing
  Free plan
• Best for
  Focused open-source PCAP and flow analysis
• Free plan
  Yes
• Paid from
  Free
• Operating systems
  Debian 32-bit and 64-bit; Ubuntu 32-bit and 64-bit
• Facts checked
  21 Sep 2026

• Where it wins

  • Analyzes TCP and UDP streams, flows, reassembly, and lost bytes
  • Identifies more than 140 protocols through deep packet inspection
  • Filters traffic by IP, port, protocol, country, volume, and date

• Where it doesn't

  • Operating-system coverage is limited to Debian and Ubuntu
  • Capture-file support is centered on the PCAP format
  • Locally installed deployments require a Linux installation

Our verdict on CapAnalysis

CapAnalysis is an open-source web application for analyzing captured network traffic. It is designed for information security specialists, system administrators, researchers, engineers, developers, and students who need to inspect PCAP datasets through a browser-based interface. The product indexes single or multi-file datasets and presents TCP, UDP, and ESP streams or flows, giving it a focused role in packet and flow analysis rather than broad network-management work.

CapAnalysis is free and open source, with browser access for locally installed deployments. The published platform details specify Debian and Ubuntu systems, each in 32-bit and 64-bit versions. Capture-file support is listed for PCAP, while PCAP files can also be imported from a URL. This makes the product suitable for teams that can manage a Linux installation and want to keep analysis centered on captured traffic, but less suitable for environments requiring wider operating-system or capture-format coverage.

Its strongest area is traffic investigation depth within that scope. TCP stream reassembly and lost-byte analysis support detailed session review, while deep packet inspection identifies more than 140 protocols. Filters can narrow results by IP address, port, protocol, destination country, data volume, and date, and GeoIP-based localization adds geographic context. Choose CapAnalysis for focused, open-source PCAP visualization and protocol analysis. An alternative is more appropriate when the requirement extends beyond PCAP, Debian, or Ubuntu, or when a broader platform ecosystem is important.

Your product? Our editors can test CapAnalysis in depth and publish a review, labelled as paid · from $149/mo →

CapAnalysis pricing

CapAnalysis fact sheet

Alternatives to CapAnalysis

• WiresharkA complete free analyzer for live capture, offline analysis, protocol inspection, and packet decryption.9.4
• TSharkA free, open-source choice for structured, scriptable packet analysis.9.2
• tcpdumpA free, open-source choice for precise capture, filtering, and PCAP inspection.9.0

See all CapAnalysis alternatives →

Featured on iTechGuides

CapAnalysis is listed in our Network Packet Analyzer Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update