OpenMSP
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Checkmk

Network Management and Monitoring

Open Source
Commercial Vendor
Free Tier
Paid Plans
Paid Plans
E
Enterprise
Self-hosted
OpenMSP Score
68
75
Reddit Impact Score
Github Score
440M
2KStars
533Forks
99KCommits
GNU General Public License v2.0License
Mar 21, 2026Last commit

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Checkmk is a comprehensive IT monitoring system designed for scalability, flexibility, and low resource consumption. It supports infrastructure and application monitoring across physical, virtual, containerized, and cloud environments. With over 2,000 vendor-maintained plugins, Checkmk enables ITOps and DevOps teams to monitor servers, networks, storage, databases, applications, and cloud services. Available in multiple editions: Raw (open-source), Enterprise, Cloud (self-hosted and SaaS), and MSP. The platform features automated discovery, REST API integration, built-in agent management, customizable dashboards, and business intelligence capabilities.
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Key Features

Comprehensive Monitoring

Monitor everything from servers, networks, storage, databases to cloud services with 2000+ vendor-maintained plugins

High Performance Core

Scale up to millions of services monitored while maintaining small footprint with distributed architecture

Automated Discovery

Auto-discovery and auto-configuration with REST API integration and built-in agent management

Open Source Foundation

Raw edition is 100% free and open source (GPL v2) with enterprise upgrade path

Cloud-Native Support

Monitor Kubernetes, containers, AWS, Azure, GCP with OpenTelemetry integration

Business Intelligence

Map dependencies, aggregate services, and forecast infrastructure requirements

Pros and Cons

Pros

Comprehensive Coverage

Over 2,000 vendor-maintained plugins for servers, networks, applications, cloud, containers

True Open Source

Raw edition completely free and open-source (GPL v2) with no service limits

Exceptional Scalability

Monitor hundreds of thousands of hosts and millions of services from single server

Automated Operations

Auto-discovery, auto-config, REST API, and agent bakery reduce manual work

Cloud-Native Ready

Strong support for Kubernetes, containers, and ephemeral workloads

Cons

Steep Learning Curve

Complex setup can be overwhelming for beginners without Linux experience

UI Complexity

Feature-rich interface can feel overloaded for simple use cases

Enterprise Pricing

Service-based pricing can become expensive for large deployments

Limited Raw Features

Free edition lacks advanced automation and enterprise integrations

Documentation Gaps

Some advanced features lack detailed examples

Feature Comparison

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