Ozeki SMS Gateway is a high-performance, on-premises SMS gateway software designed for businesses, SMS aggregators, and mobile network operators to send and receive SMS messages. It can be installed on Windows, Linux, or Android systems, including cloud platforms like AWS, Azure, and Google Cloud, or even on a Raspberry Pi for IoT applications. The software supports multiple connection methods to mobile networks, including SMPP, UCP, CIMD2, HTTP, and GSM modems, as well as Android mobile phones via Wi-Fi. It offers robust features like automatic reconnect, backup routing, fail-safe load balancing, and message loop protection to ensure 24/7 reliability, even during network or hardware failures.