Parallels is a software that enables users to run multiple operating systems simultaneously on a single machine. This is particularly useful for Mac users who need to access Windows applications without rebooting their system. Parallels Desktop creates a virtual environment where Windows, Linux, or other OS can run alongside macOS. It’s popular for its seamless integration, allowing users to switch between systems with ease, share files, and access both OS’s features effortlessly. Parallels is widely used in business, development, and personal environments where cross-platform compatibility is essential.