Proprietary Software

Proprietary software is software on computers that is owned by a company and because it is owned by a company that does not release source code, it is not free. This business practice is condemned by Richard Stallman, Linus Torvalds (kind of him), the Electronic Frontier Foundation, and the Free Software Foundation. This type of software can contain spyware and in Richard Stallman's words "the program controls the users" because it is closed instead of "the users control the program" if it were open. (1)

Examples of proprietary software: (1) https://www.gnu.org/philosophy/keep-control-of-your-computing.en.html
 * 1) Microsoft Windows
 * 2) Snapchat
 * 3) Adobe programs (Flash, Photoshop, etc.)
 * 4) Microsoft Office (Word, PowerPoint, etc.)
 * 5) iOS
 * 6) iOS Apps