It has all my needs for document control with multiple folder types to be able to organize files into folders in many different ways! I am not sure how easy it would be to add custom fields or tags but when you can do everything through templates its great!! The interface could use some work.
Definitely give this program a try if your looking for an excellent solution for file organization/control within a construction office environment. We are using COQUE (Construction Organizing Quilt) which works well also so we have another way of organizing our paperwork.