The distinction between open-source and proprietary software lies mainly in accessibility and usage rights. Open-source software is publicly available, allowing users to view, modify, and distribute the source code freely, fostering collaboration and community development. In contrast, proprietary software is owned by an individual or organization, restricting access to the source code and limiting user modification or redistribution. Users typically pay for proprietary software through licensing agreements, which may include support and updates. Both types serve different purposes, with open-source often emphasizing customization and collaboration and proprietary software focusing on user experience and support.