UPDF - UPDF is a free, unique, productive, and delightful PDF editor for Windows, Mac, iOS, and Android.
calibre - Ebook manager, viewer & converter
FBReader - FBReader is an e-book reader for various platforms. Features:
OverDRIVE - Make workspaces and sites automatically from Google Drive
NeeView - Display two images simultaneously
Kindle for PC - There's a problem loading this menu right now.