Proprietary software, also known as closed-source or non-free software, includes applications for which the publisher or another person reserves licensing rights to modify, use, or share modifications. Examples include Adobe Flash Player, Adobe Photoshop, macOS, Microsoft Windows, and iTunes.
In contrast, OSS grants users the ability to use, change, study, and distribute the software and its source code to anyone on the internet. Accordingly, anyone can participate in the development of the software. Examples include MongoDB, LibreOffice, Apache HTTP Server, and