Free software for Windows that offers a practical solution to create, view, and edit PDF files.
Software for reading and printing PDF documents.

Utility to extract and merge pages from PDF files.
Adobe Acrobat Reader allows you to view, comment, fill out, and sign PDFs on multiple platforms.
Free software that allows you to merge multiple pages of PDF documents into a single page.
Free utility to convert PDF files, extract texts from PDF files, in addition to many other features.