DiskCatalogMaker - Simple, smart and fast disc management tool.
TagSpaces - TagSpaces is an open source platform for personal data management. With TagSpaces you can manage and organize the files on your laptop, tablet or smart phone.
Virtual Volumes View - VVV uses a relational database to store its data.
TagFlow - TagFlow is an intelligent files manager that use tags for organize your documents.
NeoFinder - NeoFinder is a powerful and very fast disk cataloging tool, reading metadata like EXIF, IPTC, JPG, RAW, TIFF, MOV, MP3, AAC
Tabbles - Tabbles use tags to organize and find files along with your colleagues.