Checkmk: Monitoring Ledger 2026

Part of the Infrastructure Monitoring Ledger (edition 2026-10-04). How the scores work: methodology.

Snapshot

Tier: Challenger
Owner: Checkmk GmbH, Munich (formerly tribe29 GmbH and Mathias Kettner GmbH); PSG Equity growth investment since 2025-02
Licence model: Open-core: Community under GPLv2 free; Pro and Ultimate as per-host annual subscriptions; Multi-Tenancy add-on by quote
Products scored: Checkmk 2.5 self-hosted editions (Community, Pro, Ultimate, Ultimate with Multi-Tenancy); Checkmk Cloud SaaS not scored
Latest release: 2.5.0, 2026-04-28; patch 2.5.0p14 current at cutoff
Next signal: Checkmk 3.0: in-core NetFlow/sFlow/IPFIX, Orbvis maps, Views 3.0, incident clustering, SAML across sites; no date stated
Archetype: Open-core platform, steady shipper
Evidence grade: A. Release dates, werks, live roadmap and pricing read from primary sources; the AI evidence and the research record disagree on the MCP server status.

Scorecard

Dimension	Score	Direction
Capability today	79.2 / 100	higher is better
Momentum since end of 2022	+1.8 points	higher is better
Credibility	21.5 / 25	higher is better
Commercial risk	7.5 / 25	lower is better
Technical lock-in	7.0 / 25	lower is better
Integrator fit	16.5 / 20	higher is better
AI leverage	11.5 / 20	higher is better
Ledger Index	73.6 / 100	balanced weights

Capability by domain

Scores 0 to 5 against fixed anchors; total is weighted to 100.

Domain (weight)	2016	2019	2022	Today
Server, virtualization and storage (12)	3.5	4	4.5	4.5
Network monitoring (12)	3	3	3.5	3.5
Application and service monitoring (10)	3.5	3.5	3.5	4
Data collection and scale (12)	3.5	4	4	4
Alerting and event management (12)	3.5	4	4	4
Visualisation and reporting (8)	3.5	3.5	4	4
Logs and traces (8)	3	3	3	3.5
Automation and remediation (8)	3	3	4	4
Security and compliance (8)	3	3.5	4	4
New-platform support (VMware exit) (10)	2.5	3.5	4	4
Total / 100	64.4	70.8	77.4	79.2

Year by year: 2016: 64.4 · 2017: 64.4 · 2018: 64.4 · 2019: 70.8 · 2020: 70.8 · 2021: 74.6 · 2022: 77.4 · 2023: 77.4 · 2024: 78.4 · 2025: 78.4 · 2026: 79.2

What moved the score

Year	Domain	Change	Points	Trigger
2019	Alerting and event management	3.5 → 4	+1.2	1.6: Slack, PagerDuty and Opsgenie plugins; Event Console counting and cancellation rules
2019	Data collection and scale	3.5 → 4	+1.2	1.6: dynamic host configuration daemon, synchronised distributed setup, 20,000+ hosts per site; server HA not documented
2019	New-platform support (VMware exit)	2.5 → 3.5	+2.0	1.6: Nutanix Prism, AWS and Azure agents, Kubernetes via Prometheus
2019	Security and compliance	3 → 3.5	+0.8	1.6: TOTP two-factor login, signed agent packages, audit log of configuration changes
2019	Server, virtualization and storage	3.5 → 4	+1.2	1.6: Docker monitoring, iLO/iDRAC boards, Pure/Unity/3PAR storage agents, Kubernetes nodes via Prometheus
2021	Automation and remediation	3 → 3.5	+0.8	2.0: OpenAPI REST API replaces Web-API
2021	Network monitoring	3 → 3.5	+1.2	2.0: flow analysis through the ntopng add-on (half credit); Meraki preview
2021	New-platform support (VMware exit)	3.5 → 4	+1.0	2.0: Proxmox VE special agent; 2.1 Kubernetes collector and GCP; no XCP-ng or KubeVirt template
2021	Visualisation and reporting	3.5 → 4	+0.8	2.0: redesigned UI and official Grafana data source; multi-tenant reports through the managed edition
2022	Automation and remediation	3.5 → 4	+0.8	2.1: official Ansible collection; Jira and ServiceNow notification plugins; Terraform provider is community
2022	Security and compliance	3.5 → 4	+0.8	2.1: agent controller with mutual TLS 1.3, SAML and OIDC login, password store; no KEV entries
2022	Server, virtualization and storage	4 → 4.5	+1.2	2.1: Kubernetes collector by Helm, Redfish boards, PowerStore agent; Proxmox agent since 2.0
2024	Application and service monitoring	3.5 → 4	+1.0	2.3: Synthetic Monitoring GA with Robotmk; rewritten MS SQL plugin
2026	Logs and traces	3 → 3.5	+0.8	2.5: OpenTelemetry traces linked to infrastructure metrics; full log search still only on the roadmap

Direction, 2023 to 2026

Each item carries one theme and one driver (V vision, C customer need, M market window, U upstream, P portfolio).

Date	Item	Theme	Driver
2023-05	2.2: Cloud Edition with push agent and host auto-registration	D4 Collection and scale	M
2023-05	2.2: official OpenShift monitoring	D1 Server and virtualization	M
2024-04	2.3: LLM notification summaries via private endpoints	D7 AI-assisted operations	V
2024-04	2.3: Layer-2 topology from LLDP and CDP	D2 Network	C
2024-04	2.3: Synthetic Monitoring add-on with Robotmk	D3 Applications and services	C
2024-11	Checkmk Cloud SaaS launched	D12 Packaging and licensing	M
2025-05	2.4: Notification Hub overhaul with rule simulation	D5 Alerting and events	C
2025-05	2.4: native OpenTelemetry metric intake	D8 Logs and traces	U
2025-05	2.4: rootless Linux agent and unified packaging	D9 Security	C
2026-03	Editions renamed Community, Pro, Ultimate, Cloud; MSP becomes add-on	D12 Packaging and licensing	M
2026-04	2.5: AI alert explanation	D7 AI-assisted operations	V
2026-04	2.5: OpenTelemetry trace and metric correlation	D8 Logs and traces	U
2026-04	2.5: Relay for monitoring segmented networks	D4 Collection and scale	C
2026-09	2.5.0p13: official MCP server	D11 Ecosystem openness	V

Centre of gravity: Collection and scale (2), AI-assisted operations (2), Packaging and licensing (2)
Driver mix: Vision 21%, Customer need 36%, Market window 29%, Upstream 14%, Portfolio 0%

Credibility: 21.5 / 25

Criterion	Score	Basis
Cadence	4.5	Major release every 12 to 14 months since 2.0, patch releases between, 24-month maintenance policy
Roadmap transparency	4.5	Live public roadmap page, 16,000+ numbered werks, public git repository
Say-do	4.5	21 of 26 items GA, all due items shipped, 20 with no lag; 5 pending for 3.0
Velocity	4.5	Several substantive features per major: synthetic monitoring, OTel, Relay, topology, MCP
Lifecycle stability	3.5	24-month maintenance and in-place site updates; Web-API removed in 2.2; editions renamed in 2026

Say-do record, 2023 to 2026: 26 tracked items 2023-2026: 21 shipped (20 at the promised version), 5 pending for 3.0, none dropped. The only slip was Checkmk Cloud SaaS, about 5 months late in 2024-11.

Commercial risk: 7.5 / 25 (lower is better)

Criterion	Score	Basis
Price and licence volatility	1.5	Editions renamed in 2026-03 and MSP turned into an add-on; host-based metric unchanged since 2022
Purchase constraints	1.5	Free Community edition; paid tiers start at 100 hosts, subscription only
Channel and access	0.5	Public price list, open downloads, Silver partner tier open to any reseller
Owner stability	2.5	PSG Equity growth investment in 2025; founder-era management stays
Cost of staying supported	1.5	24-month maintenance per major; synthetic monitoring is a paid add-on

Security record of the product itself: None found in the KEV catalogue (the security record, 05). Checkmk publishes security fixes as werks.

Technical lock-in: 7.0 / 25 (lower is better)

Criterion	Score	Basis
Formats	1.5	RRD metrics, plain-text agent sections, Python-dict configuration in git; CMC core proprietary in paid editions
Export path	1.5	omd backup tar archives, REST configuration export, rrdtool dumps; no import tools for other products
Stack coupling	2	Own agent with an open text format plus SNMP, Prometheus and OTLP intake; RRD storage only, export to InfluxDB
Hardware / cloud coupling	0	Any x86_64 or ARM64 Linux or appliance; fully air-gapped
Skills and tooling coupling	2	Rule-based configuration specific to Checkmk; Nagios-style plugins and open REST API

Integrator fit: 16.5 / 20

Criterion	Score	Basis
Partner programme openness	4.5	Silver, Gold, Platinum and distributor tiers; certified partners deliver first-line support
Multi-tenancy and self-service	4	Multi-Tenancy add-on with tenant segregation, white-labelling and per-tenant SLA reports; no billing module
API and infrastructure-as-code	4	Full OpenAPI REST API; official Ansible collection with 1.2M downloads; Terraform provider community only
Skills and certification	4	Two five-day certified tracks (CCA, CCC) plus synthetic course; authorised training partners

AI leverage: 11.5 / 20

Strand	Today	Latest step
AIOps on monitoring data	2.5	2025: 2.2-2.4: NVIDIA DCGM, InfiniBand and RoCE checks, AI cluster templates; no ML correlation
AI platform stack	2.5	2026: 2.5: AI alert explanation GA; no bundled model, bring your own
AI-assisted operations	2.5	2026: 2.5: AI explains alerts; no conversational assistant, no actions
Agent openness	4	2026: 2.5.0p13: official MCP server GA with native authentication and RBAC

AI say-do: 2 announced, 2 GA with no lag, 0 preview, 0 pending, 0 dropped (incident clustering for 3.0 is on the general roadmap). The AI is statistical baselines plus LLM explanations of alerts through customer-hosted models.

Reading

Checkmk is turning a Nagios-born monitoring core into a broader observability platform, adding synthetic tests, OpenTelemetry, a Relay for segmented networks and an MCP server. Its record is the cleanest in this group: yearly majors, a public roadmap and almost every promise shipped at the stated version, with Proxmox monitoring in place since 2021. The trade-offs are flow analysis that still leans on ntopng, no configuration backup for network devices, and a new private-equity investor whose influence is not yet visible.

Open questions and evidence caveats

The AI evidence lists the MCP server as a community preview; the research record cites Checkmk's own blog for an official GA release in 2.5.0p13. Scored on the research record.
Server high availability and metrics-per-second figures are not in the research, which limits the collect score.
PSG Equity invested in 2025; pricing and edition changes since then are limited to the 2026 rename.