Which Operating System Is Best for a Child-Friendly PC?

Windows is the practical choice here. It has far more built-in parental-control options and supports many third-party tools for filtering content, setting usage limits, and monitoring activity. Linux can be configured with separate user accounts and technical restrictions, but it usually takes more effort and doesn’t offer the same range of child-safety software.

Linux is possible if you’re comfortable managing it yourself. You can create a limited account and use network-level filtering, such as DNS blocking, to restrict adult content, gambling, social media, or other categories. Just expect to configure and maintain most of it manually rather than relying on a polished parental-control system.

I’d go with Windows, mainly because it’s the standard consumer platform and has the widest selection of parental-control utilities. It also tends to have better compatibility with games and other software a younger user might want.

The best choice also depends on what he’ll actually do with the computer. If it’s primarily a gaming machine, check which games and launchers he needs first. For a general-purpose PC where safety controls are the priority, Windows will usually be simpler.