Dropsource - Mobile development platform for building native iOS & Android apps
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
AIMP - AIMP : Free Audio Player : Официальный сайт программы
GoodBarber - GoodBarber is a mobile app creation platform.
foobar2000 - An advanced freeware audio player for the Windows platform.