DroidCam

DroidCam apps is An app that lets you use your mobile phone or tablet as a webcam for your PC

Platform: Windows

SmartCam

SmartCam apps is Turn your camera phone into a webcam

Platform: Symbian

ProAm - Slow Motion Webcam

ProAm - Slow Motion Webcam apps is Turn your Sony PlayStation® Eye camera into a slow motion webcam for your PC

Platform: Windows

IP Webcam

IP Webcam apps is Turn your phone into a versatile network camera

Platform: Android