Because your smartphone or tablet must be a tool for getting work done, you'll want to download Kingsoft Office. One of the few free office suites that can word processing, slideshows and spreadsheets. Kingsoft Office also features support for a wide variety of file formats including PDF, DOCX and more. Kingsoft even supports external keyboards through ctrl+c and ctrl+v copy/paste so you may even forget you’re using a mobile app.
MORE: 25 Best Android Apps