Phantom OS, a Russian OS where “everything is an object”

Phantom OS is an operating system mostly made by Russian programmers. Phantom OS is one of a few OSes that are not based on classical concepts of Unix-like systems. Persistence: Application code does not see OS restarts and could live forever—this makes the concept of a file obsolete and any variable or data structure could be stored forever and at the same time be available directly through a pointer.

Source: en.wikipedia.org