Caligare Flow Inspector

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Score7.0

Rank#4 of 23

PriceFree

Free planYes

Free trialYes

Runs onLinux, Self-hosted, Web

Summary

Caligare Flow Inspector monitors and analyzes NetFlow exports from existing routers, without requiring deployed probes. Its web-based management interface configures collectors, network devices, application groups, and anomaly detection. The software provides real-time analysis, user data tracking, and statistics for top hosts, protocols, applications, and conversations. Its free edition supports NetFlow versions 1, 5, 6, 7, and 9, as well as low-level traffic search, interface utilization maps, filtering, and forwarding. It also includes local, LDAP, or external authentication and user and group management. The free plan is for non-commercial use, supports up to two devices, retains 24 hours of history, and has a 250 flows-per-second maximum. Professional and Enterprise editions add longer historical trends, anomaly detection, unrestricted NetFlow 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

It suits non-commercial users monitoring up to two devices, businesses monitoring one to nine devices, and enterprise users with unlimited devices. Linux and self-hosted deployment are listed.

What is good

Analyzes exports from existing routers without probes.
Free edition supports five NetFlow versions.
Tracks hosts, protocols, applications, and conversations.
Includes filtering, forwarding, and utilization maps.

What to know first

Free edition is limited to non-commercial use.
Free plan supports at most two devices.
Free plan retains 24-hour history.
Latest version requires MySQL 5.1 or newer.

Verdict

Flow Inspector combines NetFlow monitoring with a web-based interface and real-time traffic analysis. The free edition has clear device, history, and throughput limits; commercial use and longer-term analysis are listed for paid 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: Yescaligare.com
Flow protocols: NetFlow 1, 5, 6, 7, 9caligare.com
Application visibility: Yescaligare.com
Conversation analysis: Yescaligare.com
Bandwidth monitoring: Yescaligare.com
Deployment: on_premisescaligare.com

Facts

Purpose: Caligare Flow Inspector monitors and analyzes NetFlow exports sent by existing routers, without requiring deployed probes.caligare.com · 30 Sept 2026
Web interface: Its management interface is described as 100% web-based and configures collectors, network devices, application groups, and anomaly detection.caligare.com · 30 Sept 2026
Analysis: The product provides real-time network analysis, user data tracking, and statistics for top hosts, protocols, applications, and conversations.caligare.com · 30 Sept 2026
Threat visibility: Caligare says the analyzer can help identify suspicious activity, denial-of-service attacks, worm-infected stations, bottlenecks, and routing trouble.caligare.com · 30 Sept 2026
Free edition features: The free edition lists NetFlow versions 1, 5, 6, 7, and 9, low-level traffic search, interface utilization, utilization maps, filtering, and forwarding.caligare.com · 30 Sept 2026
Authentication: The free edition lists local, LDAP, or external user authentication and user and group management.caligare.com · 30 Sept 2026
Paid edition additions: The maker says Professional and Enterprise add longer-term historical trends, network anomaly detection, unrestricted NetFlow parsing, and commercial use.caligare.com · 30 Sept 2026
Trial: The download page says users can request a 30-day trial license key, which Caligare sends by email.caligare.com · 30 Sept 2026
Linux requirements: The download page lists Debian, RedHat, Fedora, SuSE, and other Linux distribution packages, and says the latest version requires MySQL 5.1 or newer.caligare.com · 30 Sept 2026
Cisco compatibility: Caligare says Flow Inspector met the requirements for inclusion in Cisco's Technology Developer Program and is distributed with a Cisco Compatible logo.caligare.com · 30 Sept 2026
Support: The maker says one year of technical support for the free version can be purchased online.caligare.com · 30 Sept 2026
Audience: Caligare describes the product editions for enterprise users with unlimited devices, businesses monitoring one to nine devices, and non-commercial users monitoring up to two devices.caligare.com · 30 Sept 2026