MonaOS is a Free Operating System.

screenshot of MonaForms GUI screenshot of BayGUI GUI

MonaOS is a free operating system.
It's new, small, simple, open source and well structured.
So, MonaOS may be suitable for education of operating system and program at school.
You can download MonaOS for free at Download.

Aug 5, 2011 new
Mona OS ver.0.3.4(Download/Release notes/Screenshots 1 | 2 | 3 | 4).
Jan 8, 2011
Mona OS ver.0.3.3(Internal Release) (Download/Release notes).
Dec 29, 2010
Mona OS ver.0.3.2(Internal Release) (Download/Release notes).
Nov 17, 2010
Mona OS ver.0.3.1 (Download/Screen Shot/Release notes).
Nov 7, 2010
Mosh 0.2.6 released. Download
Mar 3, 2010
Mona OS is moved to GitHub
Oct 10, 2009
Mona OS ver.0.3.0 (Download/Screen Shot 1 2 3/Release notes).
Aug 7, 2009
R6RS Scheme Interpreter Mosh 0.2.0 realeased. (Download).
May 3, 2009
R6RS Scheme Interpreter Mosh 0.1.0 realeased. (Download).
Sep 30, 2008
R6RS Scheme Interpreter Mosh 0.0.7 realeased. (Download).
Aug 28, 2008
R6RS Scheme Interpreter Mosh 0.0.6 realeased. (Download).
July 18, 2008
R6RS Scheme Interpreter Mosh 0.0.5 realeased. (Download).
June 12, 2008
R6RS Scheme Interpreter Mosh 0.0.4 realeased. (Download).
May 13, 2008
R6RS Scheme Interpreter Mosh realeased. (Download).
Nov 4, 2007
Easy Mona Player 0.0.7 for Windows with Qemu.(Download).
Oct 18, 2007
MonaADK(Mona Application Development Kit) 0.3.0 alpha9 Released.(Download).
Oct 16, 2007
Easy Mona Player 0.0.6 for Windows with Qemu.(Download).
Oct 5, 2007
Easy Mona Player 0.0.5 for Windows with Qemu.(Download).
May 27, 2007
Mona OS ver.0.3.0alpha9 (Download/Screen Shot 1 2 3/Release notes).
Apr 15, 2007
Mona OS is getting Scheme shell, now developing. (Screen Shot)
Oct 9, 2006
Mona OS ver.0.3.0alpha8 (Download).
Aug 6, 2006
File Server on Linux version 0.0.1 Released (Download).
Apr 25, 2006
We have moved to sf.net and start to use Subversion.