There is only one file type that uses the .NYF extension:
myBase Database File
An NYF file is a data file saved by myBase, a free-form database system. It may contain unstructured text, formatted documents, images, webpages, emails, and other files.
Data entered into a myBase database is saved in a tree-structured outline format. The files are also compressed using zlib compression to reduce their file size.
|Wjj Software myBase|
Updated: May 22, 2021