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Head-to-head · Network Protocol Analyzers

Arkime vs Colasoft Capsa

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Arkime #6 in Network Protocol Analyzers 8.7/10 Free plan Free plan✓ 4 of 5 features Visit Arkime
Colasoft Capsa #10 in Network Protocol Analyzers 8.2/10 Free plan · 30-day trial Free planFree trial✓ 4 of 5 features Visit Colasoft

Arkime leads on 1 check, Colasoft Capsa on 1, and 4 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreArkime · 8.7/10
  • Free planboth
  • Free trialonly Colasoft Capsa

Arkime scores higher on our rubric for network protocol analyzers: 8.7 against 8.2 out of 10; our editors rank them #6 and #10.

On deployment, Arkime gives you Server where Colasoft Capsa offers Desktop. On capture sources, Arkime gives you Both where Colasoft Capsa offers Local. Colasoft Capsa offers traffic decryption; Arkime doesn't. Arkime offers remote capture; Colasoft Capsa doesn't.

Arkime is the better fit for searchable, server-based packet investigations. Colasoft Capsa is the better fit for windows packet analysis with built-in diagnosis.

  • Arkime fits best

    Searchable, server-based packet investigations

  • Colasoft Capsa fits best

    Windows packet analysis with built-in diagnosis

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 Arkime 8.7/10 Visit ↗ Colasoft Capsa 8.2/10 Visit ↗
At a glance
Editor score 8.7 8.2
Ranking #6 in Network Protocol Analyzers #10 in Network Protocol Analyzers
Best for Searchable, server-based packet investigations Windows packet analysis with built-in diagnosis
Pricing model Free Free plan + paid
Starting price Free plan $695 one-time
Free plan ✓ ✓
Free trial — 30 days
Deployment Self-hosted Desktop
Platforms Web, Linux Windows
Support Community, Docs Email, Docs, Tickets
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Arkime 4/5 · Colasoft Capsa 4/5
PCAP support ✓ ✓
Traffic decryption — ✓ (best)
CLI tools ✓ ✓
Remote capture ✓ (best) —
Flow analysis ✓ ✓
Specs
Deployment Server Desktop
Capture sources Both Local
Our review
Pros
  • Combines live capture with offline PCAP import and processing
  • Searches session metadata and protocol fields through a web interface
  • Supports PCAP retention, export, flow views, and remote capture
  • Real-time capture with protocol, application, flow, and conversation analysis
  • Decrypts HTTPS traffic using RSA, PSK, or PMS log files
  • Automatic diagnosis, security alarms, replay, export, and CLI controls
Cons
  • Requires server deployment and self-hosted operation
  • Encrypted TLS traffic is indexed as ciphertext without decryption support
  • OpenSearch or Elasticsearch is required for indexed session data
  • Windows desktop deployment limits platform choice
  • Capture sources are local rather than remote
  • Paid editions use single-seat perpetual licenses
Our verdict

Arkime is a self-hosted, open-source network analysis and session search system for security teams and network operators. It runs on Linux with web, API, and server deployment options. The system can capture traffic from live network…

Read the review →

Colasoft Capsa is a Windows-based network protocol analyzer for network engineers, administrators, developers, and networking students. It captures wired and wireless traffic in real time, decodes protocols, monitors hosts and…

Read the review →
  1. ArkimeNetwork Protocol Analyzers 8.7Free plan
  2. Colasoft CapsaNetwork Protocol Analyzers 8.2Free plan · 30-day trial

Strengths and trade-offs

  • Arkime — where it wins

    • Combines live capture with offline PCAP import and processing
    • Searches session metadata and protocol fields through a web interface
    • Supports PCAP retention, export, flow views, and remote capture

    Where it doesn't

    • Requires server deployment and self-hosted operation
    • Encrypted TLS traffic is indexed as ciphertext without decryption support
    • OpenSearch or Elasticsearch is required for indexed session data

  • Colasoft Capsa — where it wins

    • Real-time capture with protocol, application, flow, and conversation analysis
    • Decrypts HTTPS traffic using RSA, PSK, or PMS log files
    • Automatic diagnosis, security alarms, replay, export, and CLI controls

    Where it doesn't

    • Windows desktop deployment limits platform choice
    • Capture sources are local rather than remote
    • Paid editions use single-seat perpetual licenses
  • Arkime8.7/10 · Free plan

    A server-based Arkime system for searchable packet investigations and session analysis.

    Visit ArkimeFull verdict →
  • Colasoft Capsa8.2/10 · Free plan · 30-day trial

    A Windows-focused analyzer combining packet inspection, diagnosis, replay, and security analysis.

    Visit ColasoftFull verdict →

More comparisons

All network protocol analyzers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update