Professional network tools.
Free forever.

Built by network engineers, for network engineers. No subscriptions, no paywalls — just tools that work.

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All Czatownik tools are free of charge and free to use — forever. No trials, no license keys, no paywalls.   Commercial support and professional services available — see details →
Products

The Czatownik family of tools

Czatownik NMS
Professional network device monitoring — ping, SNMP, BGP, GPON, anomaly detection and more. Runs entirely on your own server.
Download free
Czatownik Honeypot
A network honeypot for detecting and analysing malicious activity on your infrastructure.
Download free
Czatownik BlackHole adv
Advanced BGP blackhole management and traffic filtering for ISPs and network operators.
We are working on it — will be available as part of the Czatownik family of tools.
Czatownik Fiber
Documentation system for fiber optic cables, splice closures, and passive infrastructure components.
We are working on it — will be available as part of the Czatownik family of tools.
About

Built by people who run networks

We are a team of network engineers and security specialists with years of hands-on experience in large-scale network design, ISP infrastructure and cybersecurity. We build tools we use ourselves — and share them freely.

  • Large-scale IT/OT network design and operations
  • Cybersecurity audits, NIS2 and ISO 27001
  • ISP and carrier-grade infrastructure
  • BGP routing, MPLS, fiber optics
  • Custom monitoring and automation solutions
Contact

Get in touch

Have a question about installation, a feature request, or need support? Write to us — we respond personally.

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Need professional help?

Deployment, custom integrations, cybersecurity audits, NIS2 / ISO 27001 compliance — we can help.

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