The Operating System Icon

The Operating System

Tiny Yet Powerfull

As of 2012-09-22, this project is no longer under active development.

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Download THEOS-3.0.7.iso
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The Operating System is a (Limited) opensource {see FAQ} Operataing system with a monolithic preemptive kernel, video drivers, for 32-bit x86 arctiecture computers.Developed and maintained by AbdulMoeed K. Raja.

Written entirely in FASM (assembly Language). However, C, C++,Pascal,Forth, among other high-level languages and compilers, can also be used in user application development.
It is A single Person Project, started in 2002 with a very tiny boot loader, gradually a Cli operating system to basic And now intermediate GUI.

The Objectives behind the creation are
1:That is absloutely free.
2:Very small in size.
3:Runs on any Hardware. (32-bit x86 for now)
4:Runs all programs ever created for computers.
The forth Task is a bit difficult... but works are being done to over come.

The Operating System Web Site


OS distribution


Other License


  • The operating System is Designed to run on variety of File systems,including NTFS.
  • Have A Good GUI Enviroment
  • Free Of cost and limited (but NOT closed) source
  • Runs on low end systems or older hardware(minimum req 386,486 )

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Additional Project Details

Intended Audience

Advanced End Users

User Interface

Grouping and Descriptive Categories (UI)

Programming Language



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