Nib extension is associated with user interface part. You may open nib files with Apple Interface Builder.
Nib extension stands for a file which has interface features. These interface files are used by various different softwares. Nib files may include icons and menu features. You may need to create interfaces for your own software, in this case you can use Apple Interface Builder.
What to use nib
Apple Interface Builder
which page related to nib file
nib Related Searches
You can check related links about nib fileextension.