Free software is a matter of liberty, not price. To understand the concept, you should think of free as in free speech, not as in free beer.”

Most of the people think that programming is an important part of software and a challenging processor. A free software program offers full freedom to run, copy, distribute, study and change the software. So a free software program provides full freedom to run the program. It offers full freedom to study how a software program works and adjust it according to your requirements. It also provides freedom to spread copies, which makes you easy to help your neighbor. A free software program offer full freedom to improve the program. Thus a free software program provided all these types freedom to the users. The people are free for the modification of free software and use them personally for their purpose.

The freedom to run is the freedom for an individual or an organization to use on different types of computers system for various types of purpose. So a user is totally free to run a free software program for his purpose. If a user distributes it to others then they are also free to use this program for their personal purpose.

The freedom to spread copies should include the executable forms of the program and source code for the modified and unmodified version. If there is no opportunity to spread executable form for a particular program (some program languages fails to support the features) then you should be free to distribute these forms.