The History of RISCOS


RISCOS was the original operating system for ARM CPU’s. RISCOS was designed 30 years ago by the british company Acorn Computer Ltd. to run on their own processor ARM. Since then many things have changed in the computer world. Thanks to the ARM processor’s low energy technology every one of us has a mobile phone in our pockets. Everyone connects wireless to the internet. The tiny graphics processor unit (GPU) included in the SoC (System on a Chip) can produce stunning 3D graphics in real-time. Videos can be played with amazing details in high 4K resolutions. All this was science fiction 30 years ago. But all this is used every day by us as a normal feature of life.

RISCOS must be upgraded to include all the features that have been invented and created in the last 30 years. For this purpose, we create this project RISCOS Cloverleaf. So that all people on this planet can enjoy again the benefits of this unique operating system.


RISCOS is simple and straight forward as it's resources have been limited. It uses the outmost efficiency of the ARM processor to give the maximum benefit for the user.

User friendly

RISCOS was one of the first operating system with a graphics user interface (GUI). It is designed to give you a convenient way to use a computer for your daily tasks. It has unique features like the main menu at a mouseclick.


The RISCOS is carefully organized into modules that manage one part of the operating systems functions. Each program use this resources and don't mess up the operating system with any new program installed. RISCOS you can use for years withour any need to reinstall or upgrade it.


Learn more about us

Play Video

ChatCube for RISCOS

ChatCube is the first messenger for RISCOS. It will later function as multi-messenger platform. It is part of the RISCOS Cloverleaf project that has the aim to make RISCOS ready for mainstream usage around the world.

Current functions:

  • 1 to 1 chat
  • Public group chat for RISCOS support
  • Sending of photos
  • Sending of files
  • Profile photo or avatar
  • Screenshot function
Cloverleaf computer desktop case 2

Get connected with all other RISCOS users

Stickers and smilies

Create private group chats

Location function to find members nearby

Voice call

Video call

We will try to integrate as many messengers as possible. Next messenger will be likely to be Telegram. Facebook messenger will be investigated next.

Messengers like Skype or Whatsapp will be difficult to implement as they are owned by Microsoft and they like to change the protocol so nobody can access it.  Microsoft even stops support for WhatsApp on their own mobile operating system on 31.12.2019 .