Caligare Flow Inspector

Web · Linux · Self-hosted

Freedom report

Two barsScore 6.5

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely2 of 6 device platforms
  • DocumentedPlans, terms and facts published

Caligare Flow Inspector monitors and analyzes NetFlow exports from existing routers, without requiring deployed probes. Its web-based management interface lets administrators configure collectors, network devices, application groups, and anomaly detection. The product provides real-time network analysis, user data tracking, and statistics for leading hosts, protocols, applications, and conversations. Caligare says this visibility can help reveal suspicious activity, denial-of-service attacks, worm-infected stations, bottlenecks, and routing problems. The free edition handles NetFlow versions 1, 5, 6, 7, and 9, along with low-level traffic searches, interface utilization and maps, filtering, forwarding, and local, LDAP, or external authentication. Its free license is for non-commercial use and is limited to two devices, 24-hour history, and 250 flows per second. Professional and Enterprise editions add longer historical trends, network anomaly detection, unrestricted parsing, and commercial use. A 30-day trial license can be requested by email. Linux packages are listed, and the latest version requires MySQL 5.1 or newer.

Who it is for

The editions address enterprise users monitoring unlimited devices, businesses monitoring one to nine, and non-commercial users monitoring up to two. The free edition is specifically limited to non-commercial use.

What is good

  • Analyzes exports from existing routers without probes.
  • Provides real-time network analysis.
  • Free edition supports five listed NetFlow versions.
  • Includes LDAP and external authentication options.
  • A 30-day trial license can be requested.

What to know first

  • Free edition is non-commercial only.
  • Free edition allows up to two devices.
  • Free edition keeps 24-hour history.
  • Latest version requires MySQL 5.1 or newer.

Verdict

Flow Inspector provides network visibility from NetFlow exports, with the free edition covering basic monitoring and a narrow device and history allowance. Commercial use and extended analysis features are listed for the Professional and Enterprise editions.

Caligare Flow Inspector plans and pricing

All plans
Caligare Flow Inspector Free Edition Free Non-commercial use · maximum 2 devices · 24-hour history · 250 flows/sec maximum caligare.com · 30 Sept 2026
Caligare Flow Inspector Enterprise edition Not published Unlimited monitored devices · commercial use caligare.com · 30 Sept 2026
Caligare Flow Inspector Professional edition Not published 1–9 monitored devices · commercial use caligare.com · 30 Sept 2026

Compared on network traffic analysis software

Free plan
Yes
Flow protocols
NetFlow 1, 5, 6, 7, 9
Application visibility
Yes
Conversation analysis
Yes
Bandwidth monitoring
Yes
Deployment
on_premises

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