Compare and Contrast: Proprietary software and Free software

Proprietary software is the software that is neither open nor freely available. Its use is regulated and further distribution and modification is either forbidden or requires special permission by the supplier or vendor. Source code of proprietary software is normally not available. These softwares need to be purchased before they can be used.

Free software means that the software is freely accessible and can be freely used, changed, improved, copied and distributed by all who wish to do so. No payments are needed to be made for free software.