Single-platform, referring to a technology or software that operates solely on one platform, has its antonyms in multi-platform, cross-platform, and multi-device. These terms indicate the ability of a technology or software to operate on different platforms and devices, such as desktop, mobile, and web. Multi-platform software can be used on Windows, Mac, Android, and iOS, while cross-platform tools are designed to run on different operating systems. Multi-device technology can switch seamlessly between different devices, including laptops, tablets, and smartphones. With the rise of the internet of things, multi-platform and multi-device technology is becoming increasingly essential for businesses and individuals who rely on different devices and platforms to stay connected and productive.