[my123]

They have containers already in a sense, whatever the iOS Simulator.app uses is not VMs, and it's a container in more ways than just one.

[astrange]

It's a launchd namespace. It's not meant to be secure in the same way a container would be, but it could be used for something.

[BillinghamJ]

That is not exactly designed to deliver any kind of isolation though - it just runs normal processes