The simply the best collection of language scripts
A versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number of language modes and addons that implement more advanced editing functionality.
A CSS pre-processor that extends the CSS language, adding features that allow variables, mixins, functions and many other techniques to make CSS that is more maintainable, themable and extendable. Less runs inside Node, in the browser and inside Rhino. There are also 3rd party tools that allow you to compile your files and watch for changes.
Python is a programming language that lets you work more quickly and integrate your systems more effectively.
A popular general purpose HTML-embedded scripting language that is especially suited for Web development. Much of its syntax is borrowed from C, Java and Perl with a couple of unique PHP specific features.
An alternate syntax for JavaScript intended to be more concise and readable. The code compiles 1-to-1 into the equivalent JS, and there is no interpretation at runtime. You can use any existing JavaScript library seamlessly from CoffeeScript and vice-versa.