There are two types of baby monitors in the market today. One is the Wifi / IP camera used as a baby monitor, and the second is the standard issue Baby Monitor.
The standard issue baby monitor works on frequency that is securely linked between the camera and it’s respective monitor. These kind of baby monitors cannot be viewed from the computer unless you are a pro-hacker (the Mission Impossible type)
The Wifi / IP camera baby monitor can be viewed from the computer. All you need is the PC app provided by the baby monitor. Install said app, login with your secured username and password (that you created in the baby monitor app on your phone), and voila. You can now view the baby monitor or multiple baby monitors from the PC.
Depending on the brand, you can view not one but many monitors at a time from the PC.
We recommend the Yi-Dome Wifi Camera for your baby monitor needs as it has excellent support and a full featured website answering most of your questions with videos and other guides. You can find it in our recommendation as one of the best long range baby monitors.