@chimay I have seen higher uptimes. Around 2005, I went with a colleague to a client. There was a system (I don't remember which specific OS it was, but it accepted Unix commands) that managed payroll and some other administrative tasks. From the uptime, it appeared to have been running since 1986... NetBSD, in my opinion, is less popular because it has fewer developers and less general hype. It aims to be portable, fast, and secure, and it was the first OS (alongside Linux) to support Xen. Sometimes, being less widely adopted doesn't necessarily mean being inferior. I believe all BSDs are excellent, and sometimes the choice between them is more influenced by "popularity" or "hearsay" than by actual technical merits, which vary based on needs.