Checkmk

Overview

Checkmk is an infrastructure and network monitoring platform developed by Checkmk GmbH. It is designed to monitor servers, network devices, applications, and cloud resources, combining agent-based and agentless monitoring approaches within a single system. Checkmk is distributed in multiple editions: the Raw Edition is open source and released under the GPLv2 license, while Enterprise, Cloud, and MSP editions are commercial offerings that add features, performance enhancements, and vendor support on top of the open-source core.

This dual-track model means organizations can start with a fully free, self-hosted deployment and later move to a paid edition if they need additional capabilities or commercial support, without switching to a different monitoring product.

Key capabilities

Checkmk supports both agent-based monitoring, using a lightweight agent installed on monitored hosts, and agentless monitoring via SNMP for network devices and other equipment that cannot run an agent. A core feature is automatic service discovery, which scans monitored hosts and identifies relevant services and checks to configure automatically, reducing the manual setup typically required in other monitoring systems.

The platform ships with a large catalog of built-in check plug-ins covering a wide range of operating systems, hardware, network devices, and applications, allowing it to monitor heterogeneous environments out of the box. Checkmk includes alerting functionality to notify administrators of detected problems, along with dashboards for visualizing the current state and historical trends of monitored infrastructure. For larger environments, Checkmk supports distributed monitoring, where multiple Checkmk instances can be coordinated to monitor infrastructure across different sites or network segments while being managed from a central point.

Typical use cases

Checkmk is used by system administrators and IT operations teams that need monitoring coverage spanning both servers and network infrastructure within one platform. Its automatic service discovery makes it well suited to environments with a large or changing set of hosts, where manually defining checks for every service would be impractical. Organizations that prefer an open-source starting point, with the option to adopt commercial editions later for additional features or vendor support, often evaluate Checkmk as an alternative to fully proprietary monitoring suites. The availability of distributed monitoring also makes it applicable to organizations managing infrastructure across multiple locations.

Licensing and pricing

Checkmk Raw Edition is free and open source, released under the GPLv2 license, and can be self-hosted without licensing cost. Checkmk GmbH also offers commercial editions, Enterprise, Cloud, and MSP, which extend the Raw Edition with additional features, performance capabilities, and vendor-backed support, along with subscription-based or quote-based pricing depending on the edition and scale of deployment. This catalog does not list specific commercial prices; current licensing terms and pricing for the commercial editions should be confirmed on Checkmk’s official website.

Platform support

Checkmk runs on Linux, which is the primary platform for the core monitoring server. Checkmk GmbH also provides appliance-based deployment options and supports running Checkmk in containers, offering flexibility for organizations that prefer a pre-configured appliance or a containerized deployment model over a traditional Linux server installation.

Getting started

Checkmk is obtained directly from Checkmk GmbH’s official website; this catalog does not host installers or distribute the software. The Raw Edition can be downloaded and self-hosted at no cost under its open-source license, while the commercial Enterprise, Cloud, and MSP editions are available for evaluation or purchase through the vendor’s site. Organizations should consult Checkmk’s official documentation for current installation instructions, system requirements, and edition comparisons before deployment, as these details are maintained directly by Checkmk GmbH.

Checkmk is a trademark of Checkmk GmbH. This catalog entry is an independent, informational overview and is not affiliated with, endorsed by, or partnered with Checkmk GmbH. Visit the official site at https://checkmk.com for authoritative product details.

Where to download

Downloads are hosted by Checkmk GmbH on their official website. The button below opens that site — we never host installers.