Apps with 'Export to office formats' feature
LibreOffice is a powerful office suite – its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity.
Sumatra PDF is a slim, free, open-source PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI/FB2 viewer for Windows.Why another PDF reader?
Tree Notes is a notes organizer for Windows that allows you to organize and manage all your notes in a tree structure with icons. Tree Notes is very easy to use and light-weight.