Simple and flexible programming language for applications development
likeForth - an IDE in one file with graphics and sound.
download iso's from distrowatch and boot them with qemu
A simple and fast frontend for the QEMU Emulator - Freeware.
JPHP - an implementation of PHP on Java VM
Node.js virtual machine for Android and iOS
Android virtual machine and deobfuscator
Ready-to-use VirtualBox appliances for various OSes!