A virtual Apple Macintosh with System 8, running in Electron
Simple and flexible programming language for applications development
download iso's from distrowatch and boot them with qemu
A Quick LAMP/WAMP/MAMP/XAMPP Pkg for development, testing & production
Quick Apache/PHP/Postgresql Pkg for development, testing & production
likeForth - an IDE in one file with graphics and sound.
Node.js virtual machine for Android and iOS