OSSEC
Free
Basic out-of-the-box ruleset · community support · self-hosted
Checked 14 Oct 2026
Plans and prices
OSSEC pricing
OSSEC+
Free
Registration required · hundreds of additional rules · machine learning
Checked 14 Oct 2026
Atomic OSSEC
$5 a month
Commercial rules · GUI · vulnerability management · SIEM · professional support
Checked 14 Oct 2026
Atomic OSSEC
$55 a year
Volume discounts available · enterprise FIM and compliance features
Checked 14 Oct 2026