Audacity® is used for recording and editing audio for use with podcasts, talks and music.
Captivate allows you to capture interactions with your computer and turn it into a movie which can subsequently be used for educational demonstrations etc. The movies can be edited and incorporated into web pages.
A media player for displaying content created with Adobe Flash.
Presenter is a plug in for Microsoft PowerPoint which allows you to convert PowerPoint slides into media presentations and eLearning content.
Quicktime is a media player which allows you to watch media in a wide range of file formats.
RealPlayer is a web browser plug-in that enables you to play videos and audio tracks.
Shockwave allows you to create, edit and typeset mathematical and scientific text.
Silverlight is a web browser plug-in program for displaying Silverlight web page content.