List of Free code PowerPoint
Kinect Powerpoint Mapper
Use the Kinect sensor to drive your powerpoint presentation. Higher accuracy than other similar Kinect tools through grip gesture detection as well as swipe.
Subtitling Add-In for Microsoft PowerPoint (STAMP)
The Subtitling Add-In for Microsoft PowerPoint (STAMP) helps Microsoft PowerPoint 2010 users add closed captions to the video and audio files included in their presentations, which boosts their impact for those with hearing disabilities.
VisualPoint Use PowerPoint inside Visual Studio
VisualPoint lets you show PowerPoint presentations from inside Visual Studio.
Future release will automate walkthroughs and presentations.
Wii Presenter is a project that allows remote controlling of Powerpoint using the Wiimote. Also includes a built in zoom and panning utility.