ManyCam - ManyCam is one of the most popular solutions for integrating a variety of web cameras through one program, or a single webcam through many different programs. Read more about ManyCam.
motionEyeOS - A Video Surveillance OS For Single-board Computers
SplitCam - SplitCam webcam software. Official site of SplitCam video splitting and webcam video effects software. Latest version of SplitCam download for free.
Kerberos.io - Welcome to the revolutionary video analytics and video management platform. Open, modular, and extensible for everyone, anywhere
WebcamMax - Add videos, pictures and effects to virtual/real webcam and broadcast on messengers. It works on all webcam programs and thousands of effects are available. You can share your screen or play movies for others.
Unifi Video - Unifi Video by Ubiquity is designed specifically around Ubiquiti range of cameras and is free.