Apps with 'Webcam Splitting' feature
SplitCam webcam software offers cool webcam effects for having more positive emotions during video calls with your friends!
SparkoCam is an easy to use all-in-one webcam and video effects software for broadcasting and applying live webcam effects to your video chats and recordings.
AlterCam - Virtual Web Camera software with a lot of effects, overlays and underlay.
Send a single webcam device to multiple programs.
KvyCamBgr can be used, as a virtual web camera/splitter.