OSArmor is described as 'Monitor and block suspicious processes behaviors to prevent infections by malware, ransomware, and other threats. This tool analyzes parent processes and prevents, for example, MS Word from running cmd or powershell utilities, it prevents ransomware from deleting shadow copies' and is a Anti-Malware app in the security & privacy category. There are more than 10 alternatives to OSArmor for Windows, Mac, Linux, CentOS and Red Hat Enterprise Linux. The best OSArmor alternative is SysHardener, which is free. Other great apps like OSArmor are Malwarebytes Anti-Exploit Beta, Simple Software Restriction Policy, AppGuard and CyberLock (formerly VoodooShield).
I like Voodooshield as an alternative to OSarmor because it protects your computer against viruses, malware and ransomware Also VoodooShield is free for the Basic consumer version .