oomd is described as 'Leverages PSI and cgroupv2 to monitor a system holistically. oomd then takes corrective action in userspace before an OOM occurs in kernel space. Corrective action is configured via a flexible plugin system, in which custom code can be written' and is an app. There are 2 alternatives to oomd for Linux. The best oomd alternative is earlyoom, which is both free and Open Source.
earlyoom checks the amount of available memory and free swap up to 10 times a second (less often if there is a lot of free memory). By default if both are below 10%, it will kill the largest process (highest oom_score).
earlyoom is the most popular Linux alternative to oomd.
earlyoom is the most popular Open Source & free alternative to oomd.
nohang package provides a highly configurable daemon for Linux which is able to correctly prevent out of memory (OOM) and keep system responsiveness in low memory conditions.
