calibre - Ebook manager, viewer & converter
Convertio - File Conversion in the Cloud
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
CBconvert - A comic book converter with support for .cb*, .pdf, .xps, .epub, .mobi and directories.
Foliate - A simple and modern eBook viewer.
csBooks - News & Books and Office & Productivity