Amber is a language (derived from Smalltalk ) and environment built for the web.

Having a true live & incremental development environment where you can build your application interactively in the browser is unbeatable.

Smalltalk stands head and shoulders above most other languages for clarity, conciseness, and human-friendliness.

As a language, it is immensely clean and mature, both syntactically and semantically. It is a pure OO language, with objects all the way down.