Ring products are based on a simple principle -- use your existing home Wi-Fi network to create a ring of security around your home. By hooking up to your Wi-Fi, Ring products use the free Ring app to alert you whenever someone approaches your door or comes in a range of a security camera. You can then view an HD video stream of the person and speak to them using two-way audio communication.
IP cameras are inexpensive and more people buy them every day, but the experience of streaming on macOS is not great, with clunky web apps and ugly user interfaces. GlanceCam fixes that, allowing to natively view as many cameras as you need, from most brands.