iBooks Author - iBooks Author, free from the Mac App store, allows you to create beautiful Multi-Touch textbooks — and just about any other kind of book.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Mobipocket eBook Creator - Mobipocket eBook Creator is one of the easiest way to create a professional level of eBooks by simply providing some HTML and image files to your publication.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Atavist - Atavist provides a suite of publishing tools to tell stories and build websites.
foobar2000 - An advanced freeware audio player for the Windows platform.