Open source DAM platforms handle metadata and tagging by letting users add clear labels to each file. You can add details like file type, category, date, product name, or team notes. Tags help group similar files so they are easy to find later. Many DAM tools also support automatic tagging, where the system reads the file and adds basic info on its own. Metadata and tags can be edited anytime, which keeps files organized. This makes searching, sorting, and managing large libraries much easier for teams.