Ubuntu Core is described as ', a minimalist rendition of Ubuntu , is a lightweight, transactionally updated operating system designed for deployments on embedded and IoT devices, cloud and more' and is a Operating System in the OS & Utilities category. There are more than 100 alternatives to Ubuntu Core for a variety of platforms, including Linux, Self-Hosted solutions, BSD, Windows and Mac. The best alternative is Debian, which is both free and Open Source. Other great apps like Ubuntu Core are Linux Mint (Free, Open Source), Manjaro Linux (Free, Open Source), Fedora (Free, Open Source) and Windows 10 (Paid).
Rocky Linux is a community enterprise operating system designed to be 100% bug-for-bug compatible with America's top enterprise Linux distribution now that its downstream partner has shifted direction. It is under intensive development by the community.
Bodhi Linux, a lightweight distribution featuring the fast & fully customizable Moksha Desktop (https://alternativeto.net/software/moksha/about/). The 64-bit is built on top of Ubuntu (20.04). The 32-bit Non-PAE architecture has a Ubuntu 18.04 base – Bodhi Linux 6.0.
illumos is a free and open-source Unix operating system. It derives from OpenSolaris, which in turn derives from SVR4 UNIX and Berkeley Software Distribution (BSD). illumos comprises a kernel, device drivers, system libraries, and utility software for system administration.
Pardus is a GNU/Linux distribution funded and developed by the Scientific & Technological Research Council of Turkey. Pardus’ main focus is home use and office-related work with a user-friendly graphical interface usind Deepin De, Gnome or Xfce environments.