Master PDF Editor is a powerful editor for working with PDF files, which can also act as a regular viewer for documents of this format.

Features:

• creating, editing, viewing, encrypting PDF;
• adding\removing pages;
• editing text;
• xps support;
• import\export pages in bmp, jpg, png, tiff;

and many others.

Caliber is a library for cataloging e-books. Includes library management, eBook viewer and editor, and synchronization features for eBook reading.
Allows you to convert e-books to a dozen different formats and back.
Supports synchronization with almost all e-book reading devices (for example, Kindle, Kobo, Nook).
Can automatically pull news from a range of websites/RSS feeds, format the news into an e-book and download to a connected device.