Is Digital Asset Management offline free?

Question

Project management

Looking for:
1) Software class - Document Management System (DMS)
synonyms: Content Management System (CMS), Digital Asset Management (DAM). Digital Asset Management (MAM)
For storing photos and videos: for structuring and searching
2) +/- free (inexpensive) for personal use
3) offline
4) with a tag tree (not just a set!)
5) with search by many parameters