Sailfish OS is a general purpose Linux used commonly as mobile operating system combining the Linux kernel for a particular hardware platform use, the open-source Mer core stack of middleware, a proprietary UI contributed by Jolla or an open source UI, and other third-party components. Developed by Jolla
License: Open Source
Android offers a vast app ecosystem and extensive customization options, making it suitable for a wide range of users. In contrast, Sailfish OS emphasizes privacy and security, appealing to those who prioritize these aspects, despite having a smaller app selection and community support.