[apeace]

First I would point out I'm not seeing testing frameworks being mentioned as part of these platforms ;)

I like Node.js + Mocha

* Development in Node is super fast

* Mocha makes TDD or its variants really fun

* Node feels natural for webapps (the Hello World example is an HTTP server)

* JavaScript is a really flexible and elegant language if you get past its minor quirks

* The community is fantastic

* The built-in package manager is fantastic

* The open-source libraries are fantastic (pick the right DB for the job, there are good drivers for all of them)

There's lots to say about Node. No language is perfect for every task.

EDIT: fixed spacing