A qlf file extension is related to the Family Tree a genealogy program. A qlf file contains genealogy data.
QLF file extension - Family Tree genealogy data
What is qlf file? How to open qlf files?
File type specification:
The qlf file extension is associated with the Family Tree, a some kind of genealogy software.
The qlf file stores genealogy data. Seems to be obsolete or very rare used format.
This qlf file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.