Sugar is a meta-programming language that provides a syntactic wrapper for other programming languages. It aims to have an easy to learn syntax that focuses on software architecture, readability, and expressiveness. Sugar translates code written in its syntax to commonly used languages like JavaScript, Python, and ActionScript by taking advantage of their common features while abstracting differences. It provides a full program representation through its LambdaFactory API to allow meta-programming capabilities like modifying or analyzing programs.