Okular - Okular is a universal document viewer based developed by KDE.
LibriVox Audio Books Supporter - LibriVox Audio Books Supporter app comes up with an extensive collection of audiobooks through which you can search for your favorite book and listen to it in your native language right at your fingertips.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Lithium: EPUB Reader - Lithium: EPUB Reader app allows users to read their favorite eBooks after importing it from the internal storage.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
JustNotepad.com - A free online notepad allows you to create any text or notes in your web browser.