From the Algorand Developer Team:
To stay informed on upcoming launches of official clients for other languages, TestNet and MainNet news, please connect with us here.
SDK Quick Start
To install and use in Node, run the following command from the command line:
$ npm install algosdk
As a simple example, we can create an account and get the backup passphrase using the following Node example.
Be sure to to send us feedback and suggestions for improvements. If you want access to TestNet, please apply!