Free software for Windows that allows scanning and saving documents in PDF format.

Utility to extract and merge pages from PDF files.
Create, edit, convert, and view PDF documents.
Free software to quickly and efficiently view, create, and edit PDF files.
Adobe Acrobat Reader allows you to view, comment, fill out, and sign PDFs on multiple platforms.
Free software for Windows that offers a practical solution to create, view, and edit PDF files.