Synfig Studio - Just another WordPress site
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Animation Paper - Animation Paper is a software package for doing 2D animation.
foobar2000 - An advanced freeware audio player for the Windows platform.
CelAction 2D - CelAction 2D is the name of a powerful and highly advanced 2D animation program for the perfect creation of 2D animation.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.