Sigil - Sigil is a multi-platform WYSIWYG ebook editor. It is designed to edit books in ePub format.

Wallpaper background - Wallpaper background is another free to use mobile personalization application that lets you enjoy more than 10 million high-quality wallpapers, consists of multiple categories such as Nature, Movies, Places, Flavors, and Games etc.

Jutoh - Epub editor, convertor and creator software for Mac and PC.

Audiko - Audiko Ringtones is a free to use mobile application that can help you customize your mobile phone by setting the most beautiful images your background and the most popular ringtones as your notification signals.

calibre - Ebook manager, viewer & converter

Pitch Black Wallpaper - Pitch Black Wallpaper is an application, allowing you to set the pitch-black wallpaper to your smartphone or tablet.