The program will not work correctly if used with an OS for which it was not designed. OnyX versions are specific to each version of macOS and are not backward compatible.
To do its job, the program uses macOS's standard Unix utilities, allowing their control through a graphical user interface without needing the command line. Developed using Xcode, Apple's software development environment (Cocoa + AppleScript Studio + Objective-C), OnyX is regularly updated by its author taking into consideration users' suggestions and requests. Titanium, the program was originally meant to address its creator's personal needs.