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KolibriOS nightly build desktop
DeveloperKolibriOS Project Team
Written inFASM
Working stateActive
Source modelOpen source
Latest release0.7.7.0 r8542 / January 23, 2021; 4 months ago (2021-01-23)[1]
Available inEnglish, Russian, Italian, Spanish
Kernel typeMonolithic
Default user interfaceKolibriOS Kernel API
LicenseGNU General Public License v2 and binary blobs[2]
Preceded byMenuetOS
Official websitewww.kolibrios.org

KolibriOS, or Kolibri, is a small, open-source x86 operating system written completely in assembly. It was forked from MenuetOS in 2004 and has run under independent development since.[3]

In a 2009 review piece on alternative operating systems, TechRadar called it "tremendously impressive", noting its performance and streamlined code-base.[4]



The following list of commands is supported by the KolibriOS Shell.[5]

System requirements[edit]

  • i586 compatible CPU required
  • 8 MB of RAM[6]
  • VESA-compatible videocard
  • 1.44MB 3.5" floppy drive, hard disk, USB Flash or CD-drive
  • Keyboard and mouse (COM, PS/2 or USB)

Supported hardware[edit]

Development branches[edit]

  • KolibriACPI: extended ACPI support
  • Kolibri-A: Exokernel version of KolibriOS optimized for embedded applications and hardware engineering; only few AMD APU-based platforms are currently supported.


Dedoimedo reviewed KolibriOS in 2012:[8]

I allocated a more than sufficient 64MB of RAM to KolibriOS and let it fly. Now, to really show you how fast this thing is, I recorded a boot session. It shows the simple KolibriOS boot menu. Next, I press the Enter key. Soon thereafter, we are inside a fully functional desktop. How soon? Well, you can enjoy the video embedded below or follow the Youtube link if you hate embedded stuff. Now, keep your eyes on the screen, as the video is rather short. I mean, really, really short.

Jesse Smith from DistroWatch Weekly wrote review about KolibriOS:[9]

The application menu is broken down into familiar groupings, such as Development, Games, Data Processing, Network and Help. There are also demo programs showing off various graphics and screensavers. Programs are easy to find and most applications work well. The help documentation is a bit scattered, as it covers a number of different topics, but there doesn't seem to be a pattern to what is explained and what isn't. In short, finding help is hit or miss, but what is explained is done so clearly.

See also[edit]

  • MenuetOS - MenuetOS 32-bit version is a base of KolibriOS


  1. ^ "WebSVN - Kolibri OS". websvn.kolibrios.org. Retrieved 23 January 2021.
  2. ^ Is there any proprietary software in this? Board.KolibriOS.org, 2014.
  3. ^ "KolibriOS official site". www.kolibrios.org. Retrieved 2020-05-22.
  4. ^ 10 operating systems you've never heard of Archived 2016-04-27 at the Wayback Machine, TechRadar, 2009
  5. ^ http://wiki.kolibrios.org/wiki/Shell
  6. ^ KolibriOS – A tiny operating system on a 1.44MB floppy Archived 2014-01-29 at the Wayback Machine
  7. ^ http://wiki.kolibrios.org/wiki/Hardware_Support#Network
  8. ^ KolibriOS - The art of small, Dedoimedo
  9. ^ DistroWatch Weekly, Issue 318, 31 August 2009

Further reading[edit]

External links[edit]