No specific info about version 4.23. Please visit the main page of calibre on Mac Informer.
It made a whole mess when I had to replace my computer!
Very useful. It gets better with the updates.
I like it!
Inventory your collections of books, movies, and music.
Inventory your book, movie, music or electronics collection.
Catalog your book collection directly from your Mac.
Supports managing long lists of files by previewing multiple file types.
Affordable digital book reader compatible with Intel Mac computers running Tiger (OS 10.4) or later The User is assisted with downloading free eBooks.
It made a whole mess when I had to replace my computer!
Very useful. It gets better with the updates.
I like it!