DeskJS v0.9.9

Freeware
Vista / Win10 / Win7 / Win8

DeskJS is an application for Windows intended to help users write and learn Javascript.

Key Featutes:

Writing and running pure JavaScript (as of currently, there’s full support for ECMAScript version 5.1)
Supports JavaScript’s popup boxes, namely: alert, confirm, and prompt
Opening of JavaScript files in the console
Saving of JavaScript commands as script files
Creating, editing and saving snippets of code
Supports themes for customizing the entire console
Commands persistence or saving of console commands
Allows navigation through previous and former JavaScript commands executed
Enables command-line execution of JavaScript code and files
Enables drag-and-drop execution of JavaScript files
Supports code completions for the JavaScript language
Supports shortcut keys for typically all features
Allows pinning the application to the System Tray
Includes additional built-in APIs designed to enhance scripting in Windows

It runs on all modern versions of Microsoft Windows.