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SysGaugePRTG Network Monitor
Freemium

A free version is available; paid editions can be purchased.

 Freemium

Free for up to one hundred sensors. Larger deployments require a paid licence.

Windows Windows, Web, Self-hosted
  • Monitors local and remote computers
  • Covers server roles such as SQL Server, IIS and Active Directory
  • One hundred sensors free forever, which covers a small network
  • Autodiscovery, maps and alerting configured through one interface
  • Windows only
  • Some features are reserved for paid editions
  • Licensing is per sensor and gets expensive quickly
  • Windows server only, closed source
Downloadable app Self-hosted
Closed source Closed source
License: Proprietary License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.