CamTwist is a software package that lets you add special effects to your video
chats. Its also possible to stream your desktop and still images. With
CamTwist, you can also use multiple video chat programs at the same time.

CamTwist includes over 50 special effects from social elements like IRC
overlays to fin effects like broken glass and bubbles. You can apply one
effect at a time or stack the effects to get a truly unique image.

Want to add some graphics to your screen like you see on broadcast television?
Add the 'Image Overlay' effect and drop in a Photoshop file. How about a
countdown effect which will count down either to a specific time or from a
specific number to show your viewers when the next live show will be.