Forcing a program to initialize inside Unity game.

Is there any possible way to initialize Program or Web Browser inside the Unity game window instead of Windows?
I wanted to ask this because i think it will be good if you can, let’s say… start a web browser inside your game and leave it run in background mode while playing and listening or watching a YouTube video, or perhaps going to your website to confirm a license for the game, ext. idk something like that…

(Asking out of curiosity.) :v


 Advanced C# Scripting, Challenge, Starting a Program or Web Browser inside Unity.