What is Open Source?

open = open, accessible
source = source, ie the program text written in a programming language

Open source is a computer program with accessible source code. It means that the program is available in text form in which it wrote a programmer. And usually everyone. This gives other programmers the opportunity to study how the program works.

The term open source is closely related to the concept of free software.

What is free software?

software = software

Free software (free software in English) is a computer program that provides users the freedom to run, copy, distribute, study, change and improve. Adapt it to your needs. Fix bugs, add it to your own ideas and then publish these improvements to others.

So you have a free hand, do not ask anyone for permission or to pay for it.

To be technically possible to make changes, you must have access to its source code. Therefore, free software must always be open source. Free software is a subset of the mold open source.

Free software minimizes the risk of addiction the user to use the software. If you stop the software maker continues to evolve, it can take on anyone else.