In the beginning there was closed source software and that worked for a while. What exactly is closed software? Closed source software is the idea that no one can view but modify the software source code alone. The source code is the building block of the software. On the other hand, there is open source software. There are three certain rights that users have with open source software. These rights are: “The right to make copies of the program and to distribute these copies, the right to have access to the source code of the software and the right to make improvements to the program. » (Behlendorf 172) These rights are the foundation of open source. Open source software rights do not apply to closed source software. Mainly, these rights do not apply because we do not have access to the source code of closed software. When someone buys closed software, they are only purchasing a license to use the software. She is not purchasing the program itself, so she will not receive the source code. Open source software is also called free software. But many don't understand what free software means. Does free mean freedom or free beer? In the case of open source software, this means freedom. Everyone is free to do with the software what they want. He can modify the operation of the software and/or install the software on as many computers as he wishes. It is possible to obtain open source software at no cost to the consumer. “While it is possible for you to deploy Linux without paying any licensing fees, this does not mean that Linux, or any other operating system, is “free” in the sense that there is no cost…” (Fink 8) Since open source software files can be copied to multiple computers with little or no payment for the software once, this represents a much lower cost than closed source software where you have to purchase a license to use the software for each computer that runs this software. Open source software is better than closed source software. The security of programs as well as operating systems is at an unprecedented level. Security is the ability of a program not to harm other programs or files on your computer...