KolibriOS: tiny but mighty x86 operating system written in assembly
KolibriOS official site

		
		
		KolibriOS is a tiny yet incredibly powerful and fast operating system. This power requires only a few megabyte disk space and 8MB of RAM to run. KolibriOS features a rich set of applications that include word processor, image viewer, graphical editor, web browser and well over 30 exciting games. Full FAT12/16/32 support is implemented, as well as read-only support for NTFS, exFAT, ISO9660 and Ext2/3/4. Drivers are written for popular sound, network and graphics cards.

		

		Have you ever dreamed of a system that boots in less than few seconds from power-on to working GUI? Applications that start instantly, immediately after clicking an icon, without annoying hourglass pointers? This speed is achieved since the core parts of KolibriOS (kernel and drivers) are written entirely in FASM assembly language! Try KolibriOS and compare it with such heavyweights as Windows and Linux.

		KolibriOS has forked off from MenuetOS in 2004, and is run under independent development since then. All our code is open-source, with the majority of the code released under GPLv2 license. Your feedback is very much appreciated, and your help is even more welcome.

	