CamSplitter
I. What is it CamSplitter software allows to use one webcam driver and device in multiple applications without locking the device. This software is designed to work like a bridge between one webcam device and several webcam software applications. II. ... 4) You can run other webcam programs and choose CamSplitter as video source device, webcam driver is not locking and you will have your video in all programs. ... 2) Execute any webcam software and select 'Camsplitter' device as video source. ... 5) If you like our software, please follow steps to buy licence and activate program.
http://camsplitter.softservice.org/download/camsplitter.exe - 689Kb - Download - Screenshot

CamSplitter For Video Chat
CamSplitter Virtual Webcamera Splitter and Video Chat Splitter driver allows you to easily multiply your web-camera (any models), video cameras ( any model: analog or ditial : VHS, DV, TV-IN or TV-tunner ) in video chat or video conference software like ICQ, Yahoo Messenger, MSN Messenger,... splitcam allow this operation to happen, you can watch the video file and at the same time to send it over the internet to any video chat or video conferencing software, we are the only software on the net that allow it.
http://www.camsplitter.info/CamSplit.exe - 3Mb - Download

CamZoomer
I. Main features: 1) 8x Digital ZOOM 2) 45 Degrees PAN (depends on camera) 3) 45 Degrees TILT (depends on camera) 4) Control from your keyboard (keypad) (move left/right/up/down, zoom +/-) 5) Works with any webcam application 6) Allows to run few webcam applications with only one webcam... That allows to do 2x ZOOM without loosing of quality and then using digital zoom it makes zoom up to 8x and it still nice looking. ... That allows to emulate panning and tilting of camera. ... III. ... It takes video from real webcam on the maximum allowed resolution and transfers it to webcam...
http://www.softservice.org/download/camzoomer.exe - 727Kb - Download - Screenshot