An All-in-One, open source IT monitoring solution
With automated service discovery, SNMP support, and more than 2,000 built-in integrations, Checkmk delivers reliable insights across all IT infrastructure.
Open-source monitoring for IT performance & availability
Experience a complete open source monitoring platform that provides visibility across servers, networks, applications, and cloud environments.
An intuitive web interface serves simplify monitoring and configuration, streamlining daily operations and system oversight. Modern dashboards, historical charts, and flexible views simplify the visualization and analysis of time-series data for deeper performance insights and efficient troubleshooting.
Out-of-the-box
More than 2,000 built-in integrations included for automated, in-depth monitoring.
Cross-platform
Checkmk supports Linux, Windows, macOS and most other unix-like system.
Customizable
Open source and integrates easily with 3rd-party products such as InfluxDB, PagerDuty, Opsgenie.
Open source is our core
With roots in open source since 2007, Checkmk benefits from continuous development by a large, full-time team. This active development ensures a lot of our code changes are shared in the open source version, Checkmk Community.
Our GPL v2–licensed codebase is massive in scale. Check out our GitHub repository.
Built on proven open source technology
Built on a stable, widely adopted open-source monitoring core, Checkmk Community ensures unmatched reliability, transparency, and seamless compatibility with your existing environments, combined with a modern approach to visualization. This powerful combination delivers robust, production-ready monitoring specifically tailored for small, clearly delimited setups.
Last Major Release: 2.4
6 May 2025
Features and updates:
- Quick Setup
- Auto-discovery of hosts and services
- Extended REST-API
- Live customizable dashboards and time series graphs
- Efficient long-term data storage
- Customizable GUI, powerful search and filter options
- Granular role & permission management
- Unlimited user accounts
- Distributed monitoring
- 2000+ built-in integrations

Designed for your next milestone
Ready to scale or need advanced functionality? When your requirements grow, our commercial editions are ready.
All the features listed above are fully included in our commercial offerings. Furthermore, for large environments requiring advanced automation, long-term reporting, and extended enterprise features, Checkmk Pro and Ultimate provide the necessary extended capabilities.
Integrations
Unify your IT monitoring in a single open source monitoring tool
Checkmk provides a unified monitoring solution that is flexible, ultra-scalable, fast to set up and maintain regardless of where in your IT infrastructure you decide to deploy it.