The reliability of Linux operating systems is much higher as compare to windows from many aspects whether it is about the security or system crash. That is the reason why most of the developers prefer Linux over any other OS. Ubuntu is a debian based operating system which is open source and can be easily downloaded from its official website. This operating system is not as famous as windows or Mac, as a result, the availability of applications is less. But using Linux based operating system means complete freedom of using apps. There are some terminal commands that you can use to launch your default apps with simple commands in Ubuntu.