• G.ho.st® (ghost)
  Cloud computing - online storage, Virtual Computer (VC), Web OS (WebOS, Webtop)
  in Software with cloud computing online operating_system virtual web webos
• Inferno
  Inferno is a compact operating system designed for building distributed and networked systems on a wide variety of devices and platforms.
  in Software with cross_platform operating_system
• KolibriOS
  KolibriOS is an open source operating system with a monolithic preemptive kernel, video drivers, for 32-bit x86 architecture computers, developed and maintained by The KolibriOS Project Team. KolibriOS is a fork of MenuetOS, written entirely in FASM (assembly language).
  in Software with assembly hardware old opensource operating_system
• Microsoft Research Singularity Project
  Singularity is a research project focused on the construction of dependable systems through innovation in the areas of systems, languages, and tools. We are building a research operating system prototype (called Singularity), extending programming languages, and developing new techniques and tools for specifying and verifying program behavior.
  in Software with microsoft operating_system research

operating_system from all users