Is there anything else like SmartFrog available today?
There are many software configuration systems, but none that take exactly the same approach. Most products fall into one of two classes of system: image installers and software distributors. The image installers use boot-time protocols to install an operating system image. The software distributors, are mostly targeted at distributing software and OS patches to running computers according to some overall policy defined in some database. Neither of these two approaches handle the runtime aspects of lifecycle management, those relating to dynamic binding, rapid reconfiguration to cope with loading or failure, and so on.
