title: List of "live-editing" multi-user platforms (for web-site project)
body: <p>(after a research in Google) I would like to know what are the options for collaborative (possibly LIVE) coding on HTML, CSS, javascript, Php documents.</p>
  
  <p>I am new of Github, and as my understanding it does not allow LIVE editing to the documents, meaning that multiple people could work on a document on the same time creating inconsistencies.</p>
  
  <p>Is this correct?</p>
  
  <p>Thanks a lot.</p>