Why Open-Source?

By definition open source software is -

Open-source software is computer software whose source code is available under a copyright license that permits users to study, change, and improve the software, and to redistribute it in modified or unmodified form. It is the most prominent example of open source development.

Don't get confused between Open source and Free software, the difference between free software and open source is that you can modify open source code according with its licensing terms but you don't have access to source code for Freeware software.

Open source software's is the way to go, You may ask why? apart from being free there are many more reasons as described below:

1). Longevity
2). Quality
3). Portability
4). Compatibility
5). Impact of Negative Business Practices
6). Response Time