PDF Element – free PDF reader, editor, converter
PDF Element – free PDF reader, editor, converter for iOS. Open, edit, convert and sign PDF on iPhone iPad.
App
Calibre
Calibre is a free and open-source e-book management software for Windows, Mac and Linux that can organize, convert, and read e-books in various formats.
Owlfiles File Manager
Owlfiles File Manager for Mac, iPhone, iPad. Access files on local storage, server, NAS and cloud storages. Transfer files from any location to another. Stream movies and music to your mobile or desktop device and even more.
Yunzhang Chinese calligraphy
Learn and improve Chinese penmanship using this free Yunzhang Chinese Calligraphy app on iPhone iPad.