Checkmk
Server AppCheckmk 2.5 is the newest actively maintained release. 3 of 4 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is 2.3, on October 29, 2026.
Support pattern
How Checkmk has behaved across the cycles tracked here, rather than what its policy documents state. Useful for judging how much runway a version is likely to have before you commit to it.
Computed from release and end-of-life dates tracked for Checkmk. Medians are used rather than averages so one unusually short or long release does not skew the figure. Cycles with no recorded end-of-life date are excluded from the support window.
Release lifecycle
Actively maintainedSecurity support onlyEnd of life
Today
2.5Latest
2.5 · Apr 28, 2026
2.4
2.4 · May 6, 2025
2.3
2.3 · Apr 29, 2024
2.2
EOL Nov 23, 2025
202420252026
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