Adobe Acrobat Reader DC is a free software that allows you to not only view, but also print, sign PDF documents and add comments to them. This is the only PDF viewer that can open and interact with all kinds of PDF content, including forms and multimedia content.
Features:
- Allows you to view files in PDF.
- Allows you to add comments to documents using a number of tools.
- Associated with the Adobe Document Cloud, so PDF documents can be accessed from anywhere.
- Allows you to store files in Box, Dropbox, Google Drive and Microsoft OneDrive.