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openITCOCKPIT Community EditionCheckmk
Free

The Community Edition is open source under GPL-3.0.

 Freemium

Free open-source Raw edition, with paid Enterprise and Cloud editions.

Windows, macOS, Linux, Web, Self-hosted Self-hosted
  • Configures and visualizes Nagios, Naemon, and Prometheus monitoring
  • Includes an agent for Windows, Linux, and macOS
  • Auto-discovery reduces manual setup for new hosts and services
  • Supports both agent-based and agentless SNMP monitoring
  • Requires a self-hosted monitoring server
  • Advanced features and scaling are gated behind paid commercial editions
  • Self-hosted setup and tuning takes more effort than a hosted SaaS monitor
Downloadable app, Web application, Self-hosted Self-hosted, Downloadable app
Open source Open source
License: GPL-3.0 License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 8, 2026

Checked September 22, 2026

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