A closed source is when a software’s source code is not openly available, and only the compiled binary version is available. Closed source operating systems include Microsoft Windows, Mac OS X, and iOS.
Closed source software can be helpful for small tasks but does not have the same benefits as open-source software. Because you don’t have access to the code, you can’t study it to see how it works or modify it to suit your needs.
Closed source software tends to cost more than open-source software because companies need to charge money to profit.
In addition, if you’re using closed source software and there’s an issue with it, you have no option other than contacting their support department. The speed at which they respond and their ability to fix the problem are in their hands – not yours!
Open Source Software is software licensed under an open-source license, which means users have the freedom to run the program for any purpose, examine and modify it, and distribute copies of either the original or changed program (without paying royalties to prior developers).
Examples of Open Source Software include Linux-based operating systems such as Ubuntu and commercial programs such as Firefox and Open Office.