Every OS can theoretically do 'true' containers without VMs - for containers which match the host platform. You can have Windows containers running on Windows,

Every OS can theoretically do 'true' containers without VMs - for containers which match the host platform. You can have Windows containers running on Windows, for instance. Containers themselves are a packaging format, and do rather little to solve the problem of e.g. running Linux-compiled executables on macOS.