If you are looking for a solution to communication between disparate teams during your CAD project, there are a variety of option from GitHub to Skype.  However, I find it is sometimes best to simply have your own web server where you can customize things to your need.  Short of having your own server, a cheaper solution is to use shared web hosting.  For this purpose I like HostGator, as they typically have the features I need installed by default on even their most basic packages (more info on their packages here).  I am sure some other shared web hosts would suffice as well.  Feel free to leave your favorite web host in the comments.