Digi-John writes: Employees at Sandia National Labs have put the Inferno OS on Android-based phones, replacing the default Java UI. Applications are written in Limbo rather than Java. The full announcement is at the bitbucket repository, and a short video demonstrates some of its capabilities.
"A complex system that works is invariably found to have evolved from a simple
system that worked."
-- John Gall, _Systemantics_