WebDGap allows you to convert any website or HTML/CSS/JavaScript web application to a native Windows, Mac, Linux, and Chrome application.
WebDGap also gives you the option to export as a Chrome popup extension, and you can export your app or website as a native PhoneGap application making your app available for mobile devices :)
A LALR(1) Parser Generator for JavaScript written in JavaScript
JS/CC is a parser generator for JavaScript/ECMAScript, which is entirely written in ECMAScript itself. It produces LALR(1) parsers with integrated lexical analyzers. JS/CC can run as a website or be invoked from a console, and runs on several platforms.
ECCO is a web-based IDE. In other words is an online development environment with file manager, console interface for compiling and execution of code and an editor with syntax highlighting, tabs and support for many languages and accessed with a browser