ManyCam Free helps you use a webcam in multiple webcams and audio applications at the same time. Like Skype, MSN, Ustream, etc.
It has some amazing audio effects. Which makes your video more attractive to the viewer. The most popular effect is Voice Changer. This will change your voice to other sounds. You can also create your own audio effects.
You can draw everything on your video windows, even through your online broadcast. You can also add text to it.
You can also save your desktop screen as a screen recorder using it.