In 2002, a group of enthusiasts formed around a common interest in reviving the supercomputing work of Control Data Corporation. That group formed under the name of "controlfreaks" and the following 20 years resulted in successfully generating a stable simulator of the original CDC hardware.  This project is Desktop CYBER (dtCyber).

Following the abandonment of the project in 2020, the domain, the wiki, historical mail list, archives and all other contents were revived as Retro1.Org. 

Retro1.org is comprised of communities of interest. The current communities and sample topics shared are:

• CDC (Control Data Corporation)
  • dtCyber (the Desktop Cyber mainframe simulator)
  • NOS/BE Operating System
  • NOS2 Operating System
• IBM (International Business Machines)
  • HERCULES (Desktop mainframe simulator)
  • IBM 1130 (Simulator, Hardware and Software)
  • VM/370 R6 Community Edition
• PLATO (Programmed Learning And Teaching Operation)
  • CYBIS (present-day PLATO implementation)
  • Operation and Use
  • The TUTOR Language

Community content is generally available at codex.retro1.org and is open to all enthusiasts and hobbyists. If you wish to provide content for others, you’re welcome to reach out to us, describe the contribution you would like to make and the best means of contacting you.