PowerShell open source cross-platform reimplementation. Works on Windows, WinMobile, WinCE, Mac, Linux, Solaris, etc... Provides a rich shell environment for wide veriety of operating systems as well as to provide a hostable scripting engine.
JaguiD is a Java GUI for DOS. It consists of several sub-projects including a Java Compiler, a Class Runner and a Jar Packager. JaguiD has limited Java support to provide a Graphical User Interface for DOS and compatibles.