https://github.com/ethereumjs
deprecated, go toethereum-client
a simple standalone or embeddable Ethereum client written for Node.js.
Install
git clone https://github.com/wanderer/node-ethereum
cd ./node-ethereum
npm install .
Run
./bin/ethereum
Embed
App = require('../')
app = new App();
app.start(function(){
console.log("Ethereum has started");
});