A free software is a computer code that can be used devoid of restriction by simply the original users or by other people. This can be created by copying this program or enhancing it, and sharing that in various ways.
The software freedom movement was started in the 1980s simply by Richard Stallman, who was concerned that proprietary (nonfree) software constituted a form of oppression for its users and a violation of their moral privileges. He developed a set of four freedoms with regards to software to get considered free:
1 . The freedom to modify the software.
This is actually most basic belonging to the freedoms, and it is the one that constitutes a free application useful to its users. It is also the freedom that allows a group of users to share their modified type with each other plus the community in particular.
2 . The liberty to study this program and know how it works, to enable them to make becomes it to install their own purposes.
This freedom is the one that most of the people visualize when they listen to the word “free”. It is the flexibility to upgrade with the software, so that it may what you want it to do or perhaps stop undertaking something you don’t like.
3. The freedom to distribute copies of your altered versions to others, so that the community at large can benefit from your improvements.
This liberty is the most important of this freedoms, and it is the freedom that renders a free application useful to it is original users and to other people. It is the freedom that allows a grouping of users (or my explanation individual companies) to produce true value added versions of the software, which often can serve the needs of a particular subset for the community.