That is a great project but its back-end is written in php and it uses open babel via &quot;shell_exec&quot; function. All I wanted to do was making another powerful package completely written in JavaScript (Using node.js in back-end) which only requires a good knowledge of JavaScript to develop the application. I also ported Open Babel into Node.js so that you can use this library with native js codes. As far as I know there is no chemical application built on top of Node.js. This application can be extended and developed so fast as JavaScript is becoming more and more popular (Just take a look at this data visualization: githut.info) meaning that more developers and volunteers can contribute on this platform.