KolibriOS

KolibriOS (also known as KOS and Kolibri) is a free operating system with a monolithic preemptive, real-time kernel, video drivers, for 32-bit x86 architecture computers, developed and maintained by The KolibriOS Project Team. KolibriOS is a derivative of MenuetOS, written entirely in FASM (assembly language). However, C--, C, , Free Pascal, Forth, among other high-level languages and compilers, can also be used in user application development. KolibriOS is available in English, German and Russian. It is named after the German and Russian word for hummingbird - Kolibri.
Features
* Boots from several devices.
* Graphical user interface based on VESA.
* Development kit: code editor with a macro-assembler (FASM) integrated
* TCP/IP stack
* Fits on a single 1.44MB floppy (many applications are compressed).
* Pre-emptive multitasking, streams, parallel execution of system calls.
* Supported file systems are FAT12, FAT16, FAT32 (long names support), NTFS (read only), ISO 9660 (including multisession).
* AC'97 audio codec support for Intel, nForce, nForce2, nForce3, nForce4 and SIS7012 chipsets.
* CD and DVD support.
* USB support (uhci controller).
* User can change themes directly in the OS.
 
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