KolibriOS is an open-source, lightweight, and fast operating system designed for x86 architecture. It originated as a fork of the MenuetOS project but has since developed independently. Here are the key points about it:
Resource Efficiency: KolibriOS is extremely small, with the entire operating system fitting into a few megabytes (around 3MB). This makes it ideal for older or low-resource systems. It can boot quickly and run from floppy disks or USB drives.
Graphical User Interface (GUI): Despite its small size, KolibriOS has a fully graphical user interface, featuring windows, menus, and basic system controls. It supports basic multitasking, and the GUI is visually minimalistic.
Assembly Language: The operating system is written mostly in assembly language (FASM – Flat Assembler), which contributes to its small footprint and fast performance.