The Directkit is an API Server application - it has 2 implementations

• A Soap WebService (XML) 
• A JSON-based WebService (JSON). 

Any technology supporting the HTTP protocol should be able to use the directkit because It is only the mater of sending a request in the right format (xml or json) and receiving a response over HTTP. 

We provide some tutorial in PHP, Ruby, Node.js in our Github repositories.