PyBooklet can convert PDFs into 2 pages-per-sheet / double sided booklet ready for printing. It is developed with Python and uses PySide

Preferences Include:
1. Page size: A4 or Letter
2. Pages / Sheet (default is 2)
3. Double-sided

Select one PDF file as the input file, and select an output folder, then hit "Generate PDFs" button to create PDF files.

The license of this software is Free, you can free download and free use this pdf converter software.