Download Archive
A sensible set of older versions of Checkmk can be found here.
In the version compatibility matrix, by selecting the right version in the drop-down, you can find which distributions were supported in a version.
By downloading Checkmk you agree to the End User License Agreement and General Terms & Conditions applicable to your Checkmk Edition, accessible at https://checkmk.com/legal. You also agree to the Checkmk export control regulations, in particular you will not pass on the software to persons or companies based in Iran, Crimea, Cuba, North Korea, Russia, Sudan, and Syria.